775926990 has 24 divisors (see below), whose sum is σ = 2017410408. Its totient is φ = 206913840.

The previous prime is 775926989. The next prime is 775927007. The reversal of 775926990 is 99629577.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4310616 + ... + 4310795.

It is an arithmetic number, because the mean of its divisors is an integer number (84058767).

Almost surely, 2^775926990 is an apocalyptic number.

775926990 is an abundant number, since it is smaller than the sum of its proper divisors (1241483418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775926990 is a wasteful number, since it uses less digits than its factorization.

775926990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8621424 (or 8621421 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 775926990 is about 27855.4660704143. The cubic root of 775926990 is about 918.9113580262.

The spelling of 775926990 in words is "seven hundred seventy-five million, nine hundred twenty-six thousand, nine hundred ninety".