76990771 has 8 divisors (see below), whose sum is σ = 90450864. Its totient is φ = 64607520.

The previous prime is 76990721. The next prime is 76990777. The reversal of 76990771 is 17709967.

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 76990771 - 2⁷ = 76990643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76990777) 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, 269056 + ... + 269341.

It is an arithmetic number, because the mean of its divisors is an integer number (11306358).

Almost surely, 2^76990771 is an apocalyptic number.

76990771 is a deficient number, since it is larger than the sum of its proper divisors (13460093).

76990771 is a wasteful number, since it uses less digits than its factorization.

76990771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538421.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 76990771 is about 8774.4385005538. The cubic root of 76990771 is about 425.4150888076.

The spelling of 76990771 in words is "seventy-six million, nine hundred ninety thousand, seven hundred seventy-one".