652645641 has 4 divisors (see below), whose sum is σ = 870194192. Its totient is φ = 435097092.

The previous prime is 652645639. The next prime is 652645661. The reversal of 652645641 is 146546256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 652645641 - 2¹ = 652645639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 652645641.

It is not an unprimeable number, because it can be changed into a prime (652645661) 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, 108774271 + ... + 108774276.

It is an arithmetic number, because the mean of its divisors is an integer number (217548548).

Almost surely, 2^652645641 is an apocalyptic number.

It is an amenable number.

652645641 is a deficient number, since it is larger than the sum of its proper divisors (217548551).

652645641 is a wasteful number, since it uses less digits than its factorization.

652645641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217548550.

The product of its digits is 172800, while the sum is 39.

The square root of 652645641 is about 25546.9301678303. The cubic root of 652645641 is about 867.4127747705.

The spelling of 652645641 in words is "six hundred fifty-two million, six hundred forty-five thousand, six hundred forty-one".