634448620 has 48 divisors (see below), whose sum is σ = 1473631488. Its totient is φ = 227923200.

The previous prime is 634448593. The next prime is 634448623. The reversal of 634448620 is 26844436.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 634448620.

It is not an unprimeable number, because it can be changed into a prime (634448623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23356 + ... + 42595.

It is an arithmetic number, because the mean of its divisors is an integer number (30700656).

Almost surely, 2^634448620 is an apocalyptic number.

It is an amenable number.

634448620 is an abundant number, since it is smaller than the sum of its proper divisors (839182868).

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

634448620 is a wasteful number, since it uses less digits than its factorization.

634448620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66010 (or 66008 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The square root of 634448620 is about 25188.2635368141. The cubic root of 634448620 is about 859.2749522670.

The spelling of 634448620 in words is "six hundred thirty-four million, four hundred forty-eight thousand, six hundred twenty".