634362660 has 144 divisors (see below), whose sum is σ = 2018016000. Its totient is φ = 161118720.

The previous prime is 634362649. The next prime is 634362679. The reversal of 634362660 is 66263436.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316341 + ... + 318339.

It is an arithmetic number, because the mean of its divisors is an integer number (14014000).

Almost surely, 2^634362660 is an apocalyptic number.

634362660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634362660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009008000).

634362660 is an abundant number, since it is smaller than the sum of its proper divisors (1383653340).

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

634362660 is a wasteful number, since it uses less digits than its factorization.

634362660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 634362660 is about 25186.5571287542. The cubic root of 634362660 is about 859.2361434449.

The spelling of 634362660 in words is "six hundred thirty-four million, three hundred sixty-two thousand, six hundred sixty".