612643064 has 16 divisors (see below), whose sum is σ = 1253133720. Its totient is φ = 278474080.

The previous prime is 612643051. The next prime is 612643081. The reversal of 612643064 is 460346216.

It is a self number, because there is not a number n which added to its sum of digits gives 612643064.

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 3 ways as a sum of consecutive naturals, for example, 3480839 + ... + 3481014.

Almost surely, 2^612643064 is an apocalyptic number.

It is an amenable number.

612643064 is an abundant number, since it is smaller than the sum of its proper divisors (640490656).

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

612643064 is a wasteful number, since it uses less digits than its factorization.

612643064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6961870 (or 6961866 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 612643064 is about 24751.6275020452. The cubic root of 612643064 is about 849.3157418163.

The spelling of 612643064 in words is "six hundred twelve million, six hundred forty-three thousand, sixty-four".