629391716 has 12 divisors (see below), whose sum is σ = 1106164332. Its totient is φ = 313344768.

The previous prime is 629391709. The next prime is 629391733. The reversal of 629391716 is 617193926.

It can be written as a sum of positive squares in 2 ways, for example, as 98089216 + 531302500 = 9904^2 + 23050^2 .

It is a super-2 number, since 2×629391716² = 792267864338849312, which contains 22 as substring.

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, 336725 + ... + 338588.

It is an arithmetic number, because the mean of its divisors is an integer number (92180361).

Almost surely, 2^629391716 is an apocalyptic number.

It is an amenable number.

629391716 is a deficient number, since it is larger than the sum of its proper divisors (476772616).

629391716 is a wasteful number, since it uses less digits than its factorization.

629391716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675550 (or 675548 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 629391716 is about 25087.6805623796. The cubic root of 629391716 is about 856.9858953168.

The spelling of 629391716 in words is "six hundred twenty-nine million, three hundred ninety-one thousand, seven hundred sixteen".