662957887 has 2 divisors, whose sum is σ = 662957888. Its totient is φ = 662957886.

The previous prime is 662957881. The next prime is 662957903. The reversal of 662957887 is 788759266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662957887 - 2⁷ = 662957759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662957881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331478943 + 331478944.

It is an arithmetic number, because the mean of its divisors is an integer number (331478944).

Almost surely, 2^662957887 is an apocalyptic number.

662957887 is a deficient number, since it is larger than the sum of its proper divisors (1).

662957887 is an equidigital number, since it uses as much as digits as its factorization.

662957887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The square root of 662957887 is about 25747.9685994837. The cubic root of 662957887 is about 871.9574926499.

It can be divided in two parts, 6629 and 57887, that added together give a square (64516 = 254²).

The spelling of 662957887 in words is "six hundred sixty-two million, nine hundred fifty-seven thousand, eight hundred eighty-seven".