771876864 has 336 divisors, whose sum is σ = 2578080960. Its totient is φ = 228925440.

The previous prime is 771876827. The next prime is 771876923. The reversal of 771876864 is 468678177.

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

Its product of digits (3161088) is a multiple of the sum of its prime divisors (63).

It is a self number, because there is not a number n which added to its sum of digits gives 771876864.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16422889 + ... + 16422935.

It is an arithmetic number, because the mean of its divisors is an integer number (7672860).

Almost surely, 2^771876864 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 771876864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289040480).

771876864 is an abundant number, since it is smaller than the sum of its proper divisors (1806204096).

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

771876864 is an equidigital number, since it uses as much as digits as its factorization.

771876864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 63 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 771876864 is about 27782.6720097258. The cubic root of 771876864 is about 917.3097464039.

The spelling of 771876864 in words is "seven hundred seventy-one million, eight hundred seventy-six thousand, eight hundred sixty-four".