612564804 has 36 divisors (see below), whose sum is σ = 1549236780. Its totient is φ = 204081600.

The previous prime is 612564787. The next prime is 612564809. The reversal of 612564804 is 408465216.

612564804 is a `hidden beast` number, since 6 + 1 + 2 + 5 + 648 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 386122500 + 226442304 = 19650^2 + 15048^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (612564809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97354 + ... + 103454.

It is an arithmetic number, because the mean of its divisors is an integer number (43034355).

Almost surely, 2^612564804 is an apocalyptic number.

It is an amenable number.

612564804 is an abundant number, since it is smaller than the sum of its proper divisors (936671976).

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

612564804 is a wasteful number, since it uses less digits than its factorization.

612564804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900 (or 8895 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 612564804 is about 24750.0465454108. The cubic root of 612564804 is about 849.2795759614.

The spelling of 612564804 in words is "six hundred twelve million, five hundred sixty-four thousand, eight hundred four".