652239913 has 4 divisors (see below), whose sum is σ = 702412228. Its totient is φ = 602067600.

The previous prime is 652239859. The next prime is 652239919. The reversal of 652239913 is 319932256.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127509264 + 524730649 = 11292^2 + 22907^2 .

It is a cyclic number.

It is not a de Polignac number, because 652239913 - 2¹⁷ = 652108841 is a prime.

It is a super-2 number, since 2×652239913² = 850833808220495138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652239919) 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, 25086138 + ... + 25086163.

It is an arithmetic number, because the mean of its divisors is an integer number (175603057).

Almost surely, 2^652239913 is an apocalyptic number.

It is an amenable number.

652239913 is a deficient number, since it is larger than the sum of its proper divisors (50172315).

652239913 is a wasteful number, since it uses less digits than its factorization.

652239913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50172314.

The product of its digits is 87480, while the sum is 40.

The square root of 652239913 is about 25538.9880966337. The cubic root of 652239913 is about 867.2329903251.

The spelling of 652239913 in words is "six hundred fifty-two million, two hundred thirty-nine thousand, nine hundred thirteen".