652813906 has 8 divisors (see below), whose sum is σ = 1036822140. Its totient is φ = 307206528.

The previous prime is 652813901. The next prime is 652813907. The reversal of 652813906 is 609318256.

It can be written as a sum of positive squares in 2 ways, for example, as 640849225 + 11964681 = 25315^2 + 3459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (652813901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9600171 + ... + 9600238.

Almost surely, 2^652813906 is an apocalyptic number.

652813906 is a deficient number, since it is larger than the sum of its proper divisors (384008234).

652813906 is a wasteful number, since it uses less digits than its factorization.

652813906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19200428.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 652813906 is about 25550.2232084184. The cubic root of 652813906 is about 867.4873137750.

The spelling of 652813906 in words is "six hundred fifty-two million, eight hundred thirteen thousand, nine hundred six".