76981641 has 16 divisors (see below), whose sum is σ = 114706368. Its totient is φ = 45516800.

The previous prime is 76981637. The next prime is 76981643. The reversal of 76981641 is 14618967.

It is a cyclic number.

It is not a de Polignac number, because 76981641 - 2² = 76981637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76981593 and 76981602.

It is not an unprimeable number, because it can be changed into a prime (76981643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27096 + ... + 29801.

It is an arithmetic number, because the mean of its divisors is an integer number (7169148).

Almost surely, 2^76981641 is an apocalyptic number.

It is an amenable number.

76981641 is a deficient number, since it is larger than the sum of its proper divisors (37724727).

76981641 is a wasteful number, since it uses less digits than its factorization.

76981641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56952.

The product of its digits is 72576, while the sum is 42.

The square root of 76981641 is about 8773.9182239180. The cubic root of 76981641 is about 425.3982721024.

It can be divided in two parts, 7698 and 1641, that added together give a palindrome (9339).

The spelling of 76981641 in words is "seventy-six million, nine hundred eighty-one thousand, six hundred forty-one".