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76985641 = 378632411
BaseRepresentation
bin1001001011010…
…11010100101001
312100212021110001
410211223110221
5124202020031
611350023001
71623236635
oct445532451
9170767401
1076985641
113a5024a7
1221947a61
1312c46345
14a31ddc5
156b5a861
hex496b529

76985641 has 8 divisors (see below), whose sum is σ = 79190784. Its totient is φ = 74787120.

The previous prime is 76985603. The next prime is 76985647. The reversal of 76985641 is 14658967.

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 76985641 - 211 = 76983593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76985591 and 76985600.

It is not an unprimeable number, because it can be changed into a prime (76985647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30726 + ... + 33136.

It is an arithmetic number, because the mean of its divisors is an integer number (9898848).

Almost surely, 276985641 is an apocalyptic number.

It is an amenable number.

76985641 is a deficient number, since it is larger than the sum of its proper divisors (2205143).

76985641 is a wasteful number, since it uses less digits than its factorization.

76985641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311.

The product of its digits is 362880, while the sum is 46.

The square root of 76985641 is about 8774.1461692862. The cubic root of 76985641 is about 425.4056399353.

The spelling of 76985641 in words is "seventy-six million, nine hundred eighty-five thousand, six hundred forty-one".

Divisors: 1 37 863 2411 31931 89207 2080693 76985641