612644956 has 24 divisors (see below), whose sum is σ = 1336680576. Its totient is φ = 238692720.

The previous prime is 612644897. The next prime is 612644983. The reversal of 612644956 is 659446216.

It is a super-2 number, since 2×612644956² = 750667684224483872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994246 + ... + 994861.

It is an arithmetic number, because the mean of its divisors is an integer number (55695024).

Almost surely, 2^612644956 is an apocalyptic number.

It is an amenable number.

612644956 is an abundant number, since it is smaller than the sum of its proper divisors (724035620).

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

612644956 is a wasteful number, since it uses less digits than its factorization.

612644956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989129 (or 1989127 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 612644956 is about 24751.6657217247. The cubic root of 612644956 is about 849.3166161175.

The spelling of 612644956 in words is "six hundred twelve million, six hundred forty-four thousand, nine hundred fifty-six".