634371572 has 6 divisors (see below), whose sum is σ = 1110150258. Its totient is φ = 317185784.

The previous prime is 634371571. The next prime is 634371589. The reversal of 634371572 is 275173436.

It can be written as a sum of positive squares in only one way, i.e., 549621136 + 84750436 = 23444^2 + 9206^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634371571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79296443 + ... + 79296450.

It is an arithmetic number, because the mean of its divisors is an integer number (185025043).

Almost surely, 2^634371572 is an apocalyptic number.

It is an amenable number.

634371572 is a deficient number, since it is larger than the sum of its proper divisors (475778686).

634371572 is a wasteful number, since it uses less digits than its factorization.

634371572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158592897 (or 158592895 counting only the distinct ones).

The product of its digits is 105840, while the sum is 38.

The square root of 634371572 is about 25186.7340479070. The cubic root of 634371572 is about 859.2401671562.

The spelling of 634371572 in words is "six hundred thirty-four million, three hundred seventy-one thousand, five hundred seventy-two".