656161104 has 40 divisors (see below), whose sum is σ = 1794795840. Its totient is φ = 205854208.

The previous prime is 656161091. The next prime is 656161117. The reversal of 656161104 is 401161656.

It is an interprime number because it is at equal distance from previous prime (656161091) and next prime (656161117).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401244 + ... + 402875.

It is an arithmetic number, because the mean of its divisors is an integer number (44869896).

Almost surely, 2^656161104 is an apocalyptic number.

It is an amenable number.

656161104 is an abundant number, since it is smaller than the sum of its proper divisors (1138634736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656161104 is a wasteful number, since it uses less digits than its factorization.

656161104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804147 (or 804141 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 656161104 is about 25615.6417838788. The cubic root of 656161104 is about 868.9674207367.

The spelling of 656161104 in words is "six hundred fifty-six million, one hundred sixty-one thousand, one hundred four".