76600981 has 4 divisors (see below), whose sum is σ = 76665964. Its totient is φ = 76536000.

The previous prime is 76600973. The next prime is 76600987. The reversal of 76600981 is 18900667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12744900 + 63856081 = 3570^2 + 7991^2 .

It is a cyclic number.

It is not a de Polignac number, because 76600981 - 2³ = 76600973 is a prime.

It is a super-2 number, since 2×76600981² = 11735420580324722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76600981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76600987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30690 + ... + 33091.

It is an arithmetic number, because the mean of its divisors is an integer number (19166491).

Almost surely, 2^76600981 is an apocalyptic number.

It is an amenable number.

76600981 is a deficient number, since it is larger than the sum of its proper divisors (64983).

76600981 is a wasteful number, since it uses less digits than its factorization.

76600981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64982.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 76600981 is about 8752.1986380566. The cubic root of 76600981 is about 424.6959412266.

The spelling of 76600981 in words is "seventy-six million, six hundred thousand, nine hundred eighty-one".