662239957 has 2 divisors, whose sum is σ = 662239958. Its totient is φ = 662239956.

The previous prime is 662239951. The next prime is 662239967. The reversal of 662239957 is 759932266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 601181361 + 61058596 = 24519^2 + 7814^2 .

It is a cyclic number.

It is not a de Polignac number, because 662239957 - 2⁷ = 662239829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 662239957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662239951) 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, 331119978 + 331119979.

It is an arithmetic number, because the mean of its divisors is an integer number (331119979).

Almost surely, 2^662239957 is an apocalyptic number.

It is an amenable number.

662239957 is a deficient number, since it is larger than the sum of its proper divisors (1).

662239957 is an equidigital number, since it uses as much as digits as its factorization.

662239957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 49.

The square root of 662239957 is about 25734.0233348771. The cubic root of 662239957 is about 871.6426257170.

The spelling of 662239957 in words is "six hundred sixty-two million, two hundred thirty-nine thousand, nine hundred fifty-seven".