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8748076681 = 29338976753
BaseRepresentation
bin10000010010110110…
…10000111010001001
3211120200001100012001
420021123100322021
5120404001423211
64004021351001
7426533265511
oct101133207211
924520040161
108748076681
11378a074543
121841868461
13a95516346
145cdb98841
15363017ac1
hex2096d0e89

8748076681 has 8 divisors (see below), whose sum is σ = 8800613640. Its totient is φ = 8695694592.

The previous prime is 8748076679. The next prime is 8748076697. The reversal of 8748076681 is 1866708478.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 346704400 + 8401372281 = 18620^2 + 91659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8748076681 - 21 = 8748076679 is a prime.

It is a super-2 number, since 2×87480766812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8748076621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75601 + ... + 152353.

It is an arithmetic number, because the mean of its divisors is an integer number (1100076705).

Almost surely, 28748076681 is an apocalyptic number.

It is an amenable number.

8748076681 is a deficient number, since it is larger than the sum of its proper divisors (52536959).

8748076681 is a wasteful number, since it uses less digits than its factorization.

8748076681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77435.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 8748076681 is about 93531.1535318580. The cubic root of 8748076681 is about 2060.4916570059.

The spelling of 8748076681 in words is "eight billion, seven hundred forty-eight million, seventy-six thousand, six hundred eighty-one".

Divisors: 1 293 389 76753 113977 22488629 29856917 8748076681