634155630 has 16 divisors (see below), whose sum is σ = 1521973584. Its totient is φ = 169108160.

The previous prime is 634155629. The next prime is 634155637. The reversal of 634155630 is 36551436.

634155630 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 634155591 and 634155600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634155637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10569231 + ... + 10569290.

It is an arithmetic number, because the mean of its divisors is an integer number (95123349).

Almost surely, 2^634155630 is an apocalyptic number.

634155630 is an abundant number, since it is smaller than the sum of its proper divisors (887817954).

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

634155630 is a wasteful number, since it uses less digits than its factorization.

634155630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21138531.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 634155630 is about 25182.4468628448. The cubic root of 634155630 is about 859.1426601084.

The spelling of 634155630 in words is "six hundred thirty-four million, one hundred fifty-five thousand, six hundred thirty".