652665590 has 32 divisors (see below), whose sum is σ = 1218888000. Its totient is φ = 251321728.

The previous prime is 652665589. The next prime is 652665617. The reversal of 652665590 is 95566256.

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, 100976 + ... + 107244.

It is an arithmetic number, because the mean of its divisors is an integer number (38090250).

Almost surely, 2^652665590 is an apocalyptic number.

652665590 is a deficient number, since it is larger than the sum of its proper divisors (566222410).

652665590 is a wasteful number, since it uses less digits than its factorization.

652665590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664.

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 652665590 is about 25547.3206031474. The cubic root of 652665590 is about 867.4216125635.

The spelling of 652665590 in words is "six hundred fifty-two million, six hundred sixty-five thousand, five hundred ninety".