656664095 has 8 divisors (see below), whose sum is σ = 788147664. Its totient is φ = 525230784.

The previous prime is 656664089. The next prime is 656664121. The reversal of 656664095 is 590466656.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656664095 - 2⁴ = 656664079 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 28232 + ... + 45938.

It is an arithmetic number, because the mean of its divisors is an integer number (98518458).

Almost surely, 2^656664095 is an apocalyptic number.

656664095 is a deficient number, since it is larger than the sum of its proper divisors (131483569).

656664095 is a wasteful number, since it uses less digits than its factorization.

656664095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25129.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The square root of 656664095 is about 25625.4579471275. The cubic root of 656664095 is about 869.1894044094.

The spelling of 656664095 in words is "six hundred fifty-six million, six hundred sixty-four thousand, ninety-five".