652811905 has 16 divisors (see below), whose sum is σ = 821675520. Its totient is φ = 497316672.

The previous prime is 652811897. The next prime is 652811909. The reversal of 652811905 is 509118256.

It is a cyclic number.

It is not a de Polignac number, because 652811905 - 2³ = 652811897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (652811909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28845 + ... + 46234.

It is an arithmetic number, because the mean of its divisors is an integer number (51354720).

Almost surely, 2^652811905 is an apocalyptic number.

It is an amenable number.

652811905 is a deficient number, since it is larger than the sum of its proper divisors (168863615).

652811905 is a wasteful number, since it uses less digits than its factorization.

652811905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75168.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 652811905 is about 25550.1840502177. The cubic root of 652811905 is about 867.4864274356.

The spelling of 652811905 in words is "six hundred fifty-two million, eight hundred eleven thousand, nine hundred five".