612136664 has 32 divisors (see below), whose sum is σ = 1191075840. Its totient is φ = 294621600.

The previous prime is 612136619. The next prime is 612136667. The reversal of 612136664 is 466631216.

It is a super-2 number, since 2×612136664² = 749422590826097792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612136667) 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, 40907 + ... + 53829.

It is an arithmetic number, because the mean of its divisors is an integer number (37221120).

Almost surely, 2^612136664 is an apocalyptic number.

It is an amenable number.

612136664 is a deficient number, since it is larger than the sum of its proper divisors (578939176).

612136664 is a wasteful number, since it uses less digits than its factorization.

612136664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151 (or 13147 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 612136664 is about 24741.3957569091. The cubic root of 612136664 is about 849.0816674838.

The spelling of 612136664 in words is "six hundred twelve million, one hundred thirty-six thousand, six hundred sixty-four".