775077768 has 64 divisors (see below), whose sum is σ = 2155348800. Its totient is φ = 258076800.

The previous prime is 775077763. The next prime is 775077791. The reversal of 775077768 is 867770577.

775077768 is a `hidden beast` number, since 7 + 7 + 507 + 77 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (775077763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312180 + ... + 314652.

It is an arithmetic number, because the mean of its divisors is an integer number (33677325).

Almost surely, 2^775077768 is an apocalyptic number.

It is an amenable number.

775077768 is an abundant number, since it is smaller than the sum of its proper divisors (1380271032).

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

775077768 is a wasteful number, since it uses less digits than its factorization.

775077768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3929 counting only the distinct ones).

The product of its (nonzero) digits is 4033680, while the sum is 54.

The square root of 775077768 is about 27840.2185336251. The cubic root of 775077768 is about 918.5759980350.

The spelling of 775077768 in words is "seven hundred seventy-five million, seventy-seven thousand, seven hundred sixty-eight".