709778164 has 12 divisors (see below), whose sum is σ = 1242309600. Its totient is φ = 354832568.

The previous prime is 709778149. The next prime is 709778171. The reversal of 709778164 is 461877907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28257 + ... + 47095.

It is an arithmetic number, because the mean of its divisors is an integer number (103525800).

Almost surely, 2^709778164 is an apocalyptic number.

It is an amenable number.

709778164 is a deficient number, since it is larger than the sum of its proper divisors (532531436).

709778164 is a wasteful number, since it uses less digits than its factorization.

709778164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28262 (or 28260 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 709778164 is about 26641.6621853818. The cubic root of 709778164 is about 892.0192187538.

The spelling of 709778164 in words is "seven hundred nine million, seven hundred seventy-eight thousand, one hundred sixty-four".