77090807 has 8 divisors (see below), whose sum is σ = 78258240. Its totient is φ = 75928320.

The previous prime is 77090791. The next prime is 77090833. The reversal of 77090807 is 70809077.

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 77090807 - 2⁴ = 77090791 is a prime.

It is a super-2 number, since 2×77090807² = 11885985047822498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77090837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40223 + ... + 42095.

It is an arithmetic number, because the mean of its divisors is an integer number (9782280).

Almost surely, 2^77090807 is an apocalyptic number.

77090807 is a deficient number, since it is larger than the sum of its proper divisors (1167433).

77090807 is a wasteful number, since it uses less digits than its factorization.

77090807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 77090807 is about 8780.1370718230. The cubic root of 77090807 is about 425.5992598230.

The spelling of 77090807 in words is "seventy-seven million, ninety thousand, eight hundred seven".