712779864 has 64 divisors (see below), whose sum is σ = 1850688000. Its totient is φ = 228493440.

The previous prime is 712779857. The next prime is 712779883. The reversal of 712779864 is 468977217.

It is a congruent number.

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, 186727 + ... + 190505.

It is an arithmetic number, because the mean of its divisors is an integer number (28917000).

Almost surely, 2^712779864 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 712779864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925344000).

712779864 is an abundant number, since it is smaller than the sum of its proper divisors (1137908136).

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

712779864 is a wasteful number, since it uses less digits than its factorization.

712779864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088 (or 4084 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 51.

The square root of 712779864 is about 26697.9374484247. The cubic root of 712779864 is about 893.2749201924.

The spelling of 712779864 in words is "seven hundred twelve million, seven hundred seventy-nine thousand, eight hundred sixty-four".