652720687 has 2 divisors, whose sum is σ = 652720688. Its totient is φ = 652720686.

The previous prime is 652720643. The next prime is 652720709. The reversal of 652720687 is 786027256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 652720687 - 2¹¹ = 652718639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652720637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326360343 + 326360344.

It is an arithmetic number, because the mean of its divisors is an integer number (326360344).

Almost surely, 2^652720687 is an apocalyptic number.

652720687 is a deficient number, since it is larger than the sum of its proper divisors (1).

652720687 is an equidigital number, since it uses as much as digits as its factorization.

652720687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 652720687 is about 25548.3989126520. The cubic root of 652720687 is about 867.4460206649.

The spelling of 652720687 in words is "six hundred fifty-two million, seven hundred twenty thousand, six hundred eighty-seven".