76965981 has 8 divisors (see below), whose sum is σ = 107083200. Its totient is φ = 49079712.

The previous prime is 76965949. The next prime is 76965991. The reversal of 76965981 is 18956967.

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

It is not a de Polignac number, because 76965981 - 2⁵ = 76965949 is a prime.

It is a super-2 number, since 2×76965981² = 11847524462584722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76965991) 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, 557656 + ... + 557793.

It is an arithmetic number, because the mean of its divisors is an integer number (13385400).

Almost surely, 2^76965981 is an apocalyptic number.

It is an amenable number.

76965981 is a deficient number, since it is larger than the sum of its proper divisors (30117219).

76965981 is a wasteful number, since it uses less digits than its factorization.

76965981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115475.

The product of its digits is 816480, while the sum is 51.

The square root of 76965981 is about 8773.0257608194. The cubic root of 76965981 is about 425.3694245805.

The spelling of 76965981 in words is "seventy-six million, nine hundred sixty-five thousand, nine hundred eighty-one".