620687172 has 48 divisors (see below), whose sum is σ = 1677855872. Its totient is φ = 174908160.

The previous prime is 620687159. The next prime is 620687201. The reversal of 620687172 is 271786026.

It is a self number, because there is not a number n which added to its sum of digits gives 620687172.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44479 + ... + 56742.

Almost surely, 2^620687172 is an apocalyptic number.

It is an amenable number.

620687172 is an abundant number, since it is smaller than the sum of its proper divisors (1057168700).

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

620687172 is a wasteful number, since it uses less digits than its factorization.

620687172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101308 (or 101306 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 620687172 is about 24913.5941204797. The cubic root of 620687172 is about 853.0168104375.

The spelling of 620687172 in words is "six hundred twenty million, six hundred eighty-seven thousand, one hundred seventy-two".