771790690 has 16 divisors (see below), whose sum is σ = 1515516480. Its totient is φ = 280651120.

The previous prime is 771790687. The next prime is 771790709. The reversal of 771790690 is 96097177.

It is a super-4 number, since 4×771790690⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 771790690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508030 + ... + 3508249.

It is an arithmetic number, because the mean of its divisors is an integer number (94719780).

Almost surely, 2^771790690 is an apocalyptic number.

771790690 is a deficient number, since it is larger than the sum of its proper divisors (743725790).

771790690 is a wasteful number, since it uses less digits than its factorization.

771790690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016297.

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

The square root of 771790690 is about 27781.1211076875. The cubic root of 771790690 is about 917.2756083198.

The spelling of 771790690 in words is "seven hundred seventy-one million, seven hundred ninety thousand, six hundred ninety".