652640645726 has 4 divisors (see below), whose sum is σ = 978960968592. Its totient is φ = 326320322862.

The previous prime is 652640645693. The next prime is 652640645753. The reversal of 652640645726 is 627546046256.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163160161430 + ... + 163160161433.

It is an arithmetic number, because the mean of its divisors is an integer number (244740242148).

Almost surely, 2^652640645726 is an apocalyptic number.

652640645726 is a deficient number, since it is larger than the sum of its proper divisors (326320322866).

652640645726 is a wasteful number, since it uses less digits than its factorization.

652640645726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326320322865.

The product of its (nonzero) digits is 14515200, while the sum is 53.

The spelling of 652640645726 in words is "six hundred fifty-two billion, six hundred forty million, six hundred forty-five thousand, seven hundred twenty-six".