612864081 has 12 divisors (see below), whose sum is σ = 889699200. Its totient is φ = 406521720.

The previous prime is 612864053. The next prime is 612864089. The reversal of 612864081 is 180468216.

612864081 is a `hidden beast` number, since 6 + 1 + 2 + 8 + 640 + 8 + 1 = 666.

It is not a de Polignac number, because 612864081 - 2¹⁸ = 612601937 is a prime.

It is a super-2 number, since 2×612864081² = 751204763559949122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612864089) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 169305 + ... + 172886.

It is an arithmetic number, because the mean of its divisors is an integer number (74141600).

Almost surely, 2^612864081 is an apocalyptic number.

It is an amenable number.

612864081 is a deficient number, since it is larger than the sum of its proper divisors (276835119).

612864081 is a wasteful number, since it uses less digits than its factorization.

612864081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342396 (or 342393 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 612864081 is about 24756.0917957581. The cubic root of 612864081 is about 849.4178625343.

The spelling of 612864081 in words is "six hundred twelve million, eight hundred sixty-four thousand, eighty-one".