652665594 has 96 divisors (see below), whose sum is σ = 1566086400. Its totient is φ = 180711552.

The previous prime is 652665589. The next prime is 652665617. The reversal of 652665594 is 495566256.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2058724 + ... + 2059040.

It is an arithmetic number, because the mean of its divisors is an integer number (16313400).

Almost surely, 2^652665594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652665594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783043200).

652665594 is an abundant number, since it is smaller than the sum of its proper divisors (913420806).

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

652665594 is a wasteful number, since it uses less digits than its factorization.

652665594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 525 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The square root of 652665594 is about 25547.3206814335. The cubic root of 652665594 is about 867.4216143355.

The spelling of 652665594 in words is "six hundred fifty-two million, six hundred sixty-five thousand, five hundred ninety-four".