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768052561 = 19122333053
BaseRepresentation
bin101101110001111…
…000110101010001
31222112020010001011
4231301320311101
53033110140221
6204114010521
725014224203
oct5561706521
91875203034
10768052561
11364600291
12195276a41
13c3178693
1474010773
15476661e1
hex2dc78d51

768052561 has 8 divisors (see below), whose sum is σ = 809161920. Its totient is φ = 727011792.

The previous prime is 768052531. The next prime is 768052567. The reversal of 768052561 is 165250867.

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 768052561 - 27 = 768052433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768052567) 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, 6711 + ... + 39763.

It is an arithmetic number, because the mean of its divisors is an integer number (101145240).

Almost surely, 2768052561 is an apocalyptic number.

It is an amenable number.

768052561 is a deficient number, since it is larger than the sum of its proper divisors (41109359).

768052561 is a wasteful number, since it uses less digits than its factorization.

768052561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34295.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 768052561 is about 27713.7612207365. The cubic root of 768052561 is about 915.7922849985.

The spelling of 768052561 in words is "seven hundred sixty-eight million, fifty-two thousand, five hundred sixty-one".

Divisors: 1 19 1223 23237 33053 628007 40423819 768052561