652431979 has 2 divisors, whose sum is σ = 652431980. Its totient is φ = 652431978.

The previous prime is 652431977. The next prime is 652432037. The reversal of 652431979 is 979134256.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 652431979 - 2¹ = 652431977 is a prime.

Together with 652431977, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (652431977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326215989 + 326215990.

It is an arithmetic number, because the mean of its divisors is an integer number (326215990).

Almost surely, 2^652431979 is an apocalyptic number.

652431979 is a deficient number, since it is larger than the sum of its proper divisors (1).

652431979 is an equidigital number, since it uses as much as digits as its factorization.

652431979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 652431979 is about 25542.7480706364. The cubic root of 652431979 is about 867.3181070749.

It can be divided in two parts, 6524 and 31979, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 652431979 in words is "six hundred fifty-two million, four hundred thirty-one thousand, nine hundred seventy-nine".