652021566 has 16 divisors (see below), whose sum is σ = 1490335104. Its totient is φ = 186291864.

The previous prime is 652021547. The next prime is 652021597. The reversal of 652021566 is 665120256.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7762120 + ... + 7762203.

It is an arithmetic number, because the mean of its divisors is an integer number (93145944).

Almost surely, 2^652021566 is an apocalyptic number.

652021566 is an abundant number, since it is smaller than the sum of its proper divisors (838313538).

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

652021566 is a wasteful number, since it uses less digits than its factorization.

652021566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524335.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 652021566 is about 25534.7129609870. The cubic root of 652021566 is about 867.1362064822.

The spelling of 652021566 in words is "six hundred fifty-two million, twenty-one thousand, five hundred sixty-six".