623135691630 has 112 divisors (see below), whose sum is σ = 1688919251760. Its totient is φ = 165455892864.

The previous prime is 623135691587. The next prime is 623135691667. The reversal of 623135691630 is 36196531326.

623135691630 is a `hidden beast` number, since 6 + 2 + 3 + 1 + 3 + 5 + 6 + 9 + 1 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1515141 + ... + 1881999.

Almost surely, 2^623135691630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623135691630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844459625880).

623135691630 is an abundant number, since it is smaller than the sum of its proper divisors (1065783560130).

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

623135691630 is a wasteful number, since it uses less digits than its factorization.

623135691630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367117 (or 367102 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 623135691630 in words is "six hundred twenty-three billion, one hundred thirty-five million, six hundred ninety-one thousand, six hundred thirty".