709628 has 12 divisors (see below), whose sum is σ = 1272432. Its totient is φ = 346080.

The previous prime is 709609. The next prime is 709649. The reversal of 709628 is 826907.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 709594 and 709603.

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 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 2327.

It is an arithmetic number, because the mean of its divisors is an integer number (106036).

2⁷⁰⁹⁶²⁸ is an apocalyptic number.

It is an amenable number.

709628 is a deficient number, since it is larger than the sum of its proper divisors (562804).

709628 is a wasteful number, since it uses less digits than its factorization.

709628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372 (or 4370 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 709628 is about 842.3942070076. The cubic root of 709628 is about 89.1956307726.

The spelling of 709628 in words is "seven hundred nine thousand, six hundred twenty-eight".