709628406 has 16 divisors (see below), whose sum is σ = 1425457200. Its totient is φ = 235509408.

The previous prime is 709628371. The next prime is 709628431. The reversal of 709628406 is 604826907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256861 + ... + 259608.

It is an arithmetic number, because the mean of its divisors is an integer number (89091075).

Almost surely, 2^709628406 is an apocalyptic number.

709628406 is an abundant number, since it is smaller than the sum of its proper divisors (715828794).

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

709628406 is a wasteful number, since it uses less digits than its factorization.

709628406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516703.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 709628406 is about 26638.8514392044. The cubic root of 709628406 is about 891.9564778312.

The spelling of 709628406 in words is "seven hundred nine million, six hundred twenty-eight thousand, four hundred six".