652239917 has 4 divisors (see below), whose sum is σ = 745417056. Its totient is φ = 559062780.

The previous prime is 652239859. The next prime is 652239919. The reversal of 652239917 is 719932256.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652239917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652239919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46588559 + ... + 46588572.

It is an arithmetic number, because the mean of its divisors is an integer number (186354264).

Almost surely, 2^652239917 is an apocalyptic number.

It is an amenable number.

652239917 is a deficient number, since it is larger than the sum of its proper divisors (93177139).

652239917 is an equidigital number, since it uses as much as digits as its factorization.

652239917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93177138.

The product of its digits is 204120, while the sum is 44.

The square root of 652239917 is about 25538.9881749454. The cubic root of 652239917 is about 867.2329920979.

The spelling of 652239917 in words is "six hundred fifty-two million, two hundred thirty-nine thousand, nine hundred seventeen".