77080971 has 16 divisors (see below), whose sum is σ = 112278528. Its totient is φ = 46648800.

The previous prime is 77080961. The next prime is 77080979. The reversal of 77080971 is 17908077.

It is a happy number.

It is not a de Polignac number, because 77080971 - 2²¹ = 74983819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77080979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31525 + ... + 33881.

It is an arithmetic number, because the mean of its divisors is an integer number (7017408).

Almost surely, 2^77080971 is an apocalyptic number.

77080971 is a deficient number, since it is larger than the sum of its proper divisors (35197557).

77080971 is a wasteful number, since it uses less digits than its factorization.

77080971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its (nonzero) digits is 24696, while the sum is 39.

The square root of 77080971 is about 8779.5769260255. The cubic root of 77080971 is about 425.5811583461.

The spelling of 77080971 in words is "seventy-seven million, eighty thousand, nine hundred seventy-one".