775891968 has 176 divisors, whose sum is σ = 2228446080. Its totient is φ = 239140864.

The previous prime is 775891937. The next prime is 775891973. The reversal of 775891968 is 869198577.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4334503 + ... + 4334681.

Almost surely, 2^775891968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775891968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114223040).

775891968 is an abundant number, since it is smaller than the sum of its proper divisors (1452554112).

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

775891968 is a wasteful number, since it uses less digits than its factorization.

775891968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 284 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 60.

The square root of 775891968 is about 27854.8374254814. The cubic root of 775891968 is about 918.8975325855.

The spelling of 775891968 in words is "seven hundred seventy-five million, eight hundred ninety-one thousand, nine hundred sixty-eight".