656602055 has 4 divisors (see below), whose sum is σ = 787922472. Its totient is φ = 525281640.

The previous prime is 656602043. The next prime is 656602069. The reversal of 656602055 is 550206656.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 656602055 - 2¹⁶ = 656536519 is a prime.

It is a super-2 number, since 2×656602055² = 862252517260446050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 65660201 + ... + 65660210.

It is an arithmetic number, because the mean of its divisors is an integer number (196980618).

Almost surely, 2^656602055 is an apocalyptic number.

656602055 is a deficient number, since it is larger than the sum of its proper divisors (131320417).

656602055 is a wasteful number, since it uses less digits than its factorization.

656602055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131320416.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 656602055 is about 25624.2474035824. The cubic root of 656602055 is about 869.1620305921.

The spelling of 656602055 in words is "six hundred fifty-six million, six hundred two thousand, fifty-five".