612131634 has 32 divisors (see below), whose sum is σ = 1369440000. Its totient is φ = 202671792.

The previous prime is 612131627. The next prime is 612131651. The reversal of 612131634 is 436131216.

612131634 is a `hidden beast` number, since 6 + 1 + 21 + 3 + 1 + 634 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 612131598 and 612131607.

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, 29994 + ... + 46085.

It is an arithmetic number, because the mean of its divisors is an integer number (42795000).

Almost surely, 2^612131634 is an apocalyptic number.

612131634 is an abundant number, since it is smaller than the sum of its proper divisors (757308366).

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

612131634 is a wasteful number, since it uses less digits than its factorization.

612131634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76239 (or 76233 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 612131634 is about 24741.2941051999. The cubic root of 612131634 is about 849.0793418090.

The spelling of 612131634 in words is "six hundred twelve million, one hundred thirty-one thousand, six hundred thirty-four".