652656866 has 4 divisors (see below), whose sum is σ = 978985302. Its totient is φ = 326328432.

The previous prime is 652656839. The next prime is 652656889. The reversal of 652656866 is 668656256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 623550841 + 29106025 = 24971^2 + 5395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163164215 + ... + 163164218.

Almost surely, 2^652656866 is an apocalyptic number.

652656866 is a deficient number, since it is larger than the sum of its proper divisors (326328436).

652656866 is a wasteful number, since it uses less digits than its factorization.

652656866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326328435.

The product of its digits is 3110400, while the sum is 50.

The square root of 652656866 is about 25547.1498606009. The cubic root of 652656866 is about 867.4177476849.

The spelling of 652656866 in words is "six hundred fifty-two million, six hundred fifty-six thousand, eight hundred sixty-six".