77081607 has 12 divisors (see below), whose sum is σ = 111434544. Its totient is φ = 51344160.

The previous prime is 77081591. The next prime is 77081611. The reversal of 77081607 is 70618077.

It is not a de Polignac number, because 77081607 - 2⁴ = 77081591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77081617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10438 + ... + 16220.

It is an arithmetic number, because the mean of its divisors is an integer number (9286212).

Almost surely, 2^77081607 is an apocalyptic number.

77081607 is a deficient number, since it is larger than the sum of its proper divisors (34352937).

77081607 is a wasteful number, since it uses less digits than its factorization.

77081607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270 (or 7267 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 36.

The square root of 77081607 is about 8779.6131463750. The cubic root of 77081607 is about 425.5823288420.

The spelling of 77081607 in words is "seventy-seven million, eighty-one thousand, six hundred seven".