634422860 has 48 divisors (see below), whose sum is σ = 1369375392. Its totient is φ = 246758400.

The previous prime is 634422809. The next prime is 634422911. The reversal of 634422860 is 68224436.

It is an interprime number because it is at equal distance from previous prime (634422809) and next prime (634422911).

It is a self number, because there is not a number n which added to its sum of digits gives 634422860.

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, 205730 + ... + 208790.

It is an arithmetic number, because the mean of its divisors is an integer number (28528654).

Almost surely, 2^634422860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634422860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684687696).

634422860 is an abundant number, since it is smaller than the sum of its proper divisors (734952532).

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

634422860 is a wasteful number, since it uses less digits than its factorization.

634422860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 634422860 is about 25187.7521823604. The cubic root of 634422860 is about 859.2633226295.

The spelling of 634422860 in words is "six hundred thirty-four million, four hundred twenty-two thousand, eight hundred sixty".