774768864 has 48 divisors (see below), whose sum is σ = 2099381760. Its totient is φ = 249924480.

The previous prime is 774768853. The next prime is 774768877. The reversal of 774768864 is 468867477.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 127194 + ... + 133145.

It is an arithmetic number, because the mean of its divisors is an integer number (43737120).

Almost surely, 2^774768864 is an apocalyptic number.

It is an amenable number.

774768864 is an abundant number, since it is smaller than the sum of its proper divisors (1324612896).

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

774768864 is a wasteful number, since it uses less digits than its factorization.

774768864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260383 (or 260375 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 57.

The square root of 774768864 is about 27834.6701794722. The cubic root of 774768864 is about 918.4539502800.

The spelling of 774768864 in words is "seven hundred seventy-four million, seven hundred sixty-eight thousand, eight hundred sixty-four".