652621365 has 72 divisors (see below), whose sum is σ = 1286583480. Its totient is φ = 305437440.

The previous prime is 652621349. The next prime is 652621369. The reversal of 652621365 is 563126256.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 128119761 + 524501604 = 11319^2 + 22902^2 .

It is not a de Polignac number, because 652621365 - 2⁴ = 652621349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652621369) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 155839 + ... + 159971.

It is an arithmetic number, because the mean of its divisors is an integer number (17869215).

Almost surely, 2^652621365 is an apocalyptic number.

It is an amenable number.

652621365 is a deficient number, since it is larger than the sum of its proper divisors (633962115).

652621365 is a wasteful number, since it uses less digits than its factorization.

652621365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195 (or 4181 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 652621365 is about 25546.4550378325. The cubic root of 652621365 is about 867.4020197899.

The spelling of 652621365 in words is "six hundred fifty-two million, six hundred twenty-one thousand, three hundred sixty-five".