63172970 has 16 divisors (see below), whose sum is σ = 129955968. Its totient is φ = 21659280.

The previous prime is 63172957. The next prime is 63172981. The reversal of 63172970 is 7927136.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 63172970.

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, 451166 + ... + 451305.

It is an arithmetic number, because the mean of its divisors is an integer number (8122248).

Almost surely, 2^63172970 is an apocalyptic number.

63172970 is an abundant number, since it is smaller than the sum of its proper divisors (66782998).

63172970 is a wasteful number, since it uses less digits than its factorization.

63172970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902485.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 63172970 is about 7948.1425503070. The cubic root of 63172970 is about 398.2695454463.

The spelling of 63172970 in words is "sixty-three million, one hundred seventy-two thousand, nine hundred seventy".