652969391 has 2 divisors, whose sum is σ = 652969392. Its totient is φ = 652969390.

The previous prime is 652969283. The next prime is 652969397. The reversal of 652969391 is 193969256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 652969391 - 2²² = 648775087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652969397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326484695 + 326484696.

It is an arithmetic number, because the mean of its divisors is an integer number (326484696).

Almost surely, 2^652969391 is an apocalyptic number.

652969391 is a deficient number, since it is larger than the sum of its proper divisors (1).

652969391 is an equidigital number, since it uses as much as digits as its factorization.

652969391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 50.

The square root of 652969391 is about 25553.2657599767. The cubic root of 652969391 is about 867.5561800356.

The spelling of 652969391 in words is "six hundred fifty-two million, nine hundred sixty-nine thousand, three hundred ninety-one".