612564564 has 48 divisors (see below), whose sum is σ = 1481397120. Its totient is φ = 196775040.

The previous prime is 612564551. The next prime is 612564607. The reversal of 612564564 is 465465216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228697 + ... + 231359.

It is an arithmetic number, because the mean of its divisors is an integer number (30862440).

Almost surely, 2^612564564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612564564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740698560).

612564564 is an abundant number, since it is smaller than the sum of its proper divisors (868832556).

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

612564564 is a wasteful number, since it uses less digits than its factorization.

612564564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360 (or 3358 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 612564564 is about 24750.0416969346. The cubic root of 612564564 is about 849.2794650468.

The spelling of 612564564 in words is "six hundred twelve million, five hundred sixty-four thousand, five hundred sixty-four".