656059487 has 2 divisors, whose sum is σ = 656059488. Its totient is φ = 656059486.

The previous prime is 656059451. The next prime is 656059499. The reversal of 656059487 is 784950656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656059487 - 2¹⁴ = 656043103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656052487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328029743 + 328029744.

It is an arithmetic number, because the mean of its divisors is an integer number (328029744).

Almost surely, 2^656059487 is an apocalyptic number.

656059487 is a deficient number, since it is larger than the sum of its proper divisors (1).

656059487 is an equidigital number, since it uses as much as digits as its factorization.

656059487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 656059487 is about 25613.6582119775. The cubic root of 656059487 is about 868.9225606048.

The spelling of 656059487 in words is "six hundred fifty-six million, fifty-nine thousand, four hundred eighty-seven".