775772764 has 48 divisors (see below), whose sum is σ = 1556398368. Its totient is φ = 335167488.

The previous prime is 775772731. The next prime is 775772779. The reversal of 775772764 is 467277577.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168339 + ... + 172885.

It is an arithmetic number, because the mean of its divisors is an integer number (32424966).

Almost surely, 2^775772764 is an apocalyptic number.

It is an amenable number.

775772764 is an abundant number, since it is smaller than the sum of its proper divisors (780625604).

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

775772764 is a wasteful number, since it uses less digits than its factorization.

775772764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774 (or 4772 counting only the distinct ones).

The product of its digits is 4033680, while the sum is 52.

The square root of 775772764 is about 27852.6976072337. The cubic root of 775772764 is about 918.8504719654.

The spelling of 775772764 in words is "seven hundred seventy-five million, seven hundred seventy-two thousand, seven hundred sixty-four".