656898606 has 192 divisors, whose sum is σ = 1855828800. Its totient is φ = 171714816.

The previous prime is 656898553. The next prime is 656898611. The reversal of 656898606 is 606898656.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 95 ways as a sum of consecutive naturals, for example, 5813206 + ... + 5813318.

It is an arithmetic number, because the mean of its divisors is an integer number (9665775).

Almost surely, 2^656898606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656898606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927914400).

656898606 is an abundant number, since it is smaller than the sum of its proper divisors (1198930194).

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

656898606 is a wasteful number, since it uses less digits than its factorization.

656898606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 656898606 is about 25630.0332812894. The cubic root of 656898606 is about 869.2928617772.

The spelling of 656898606 in words is "six hundred fifty-six million, eight hundred ninety-eight thousand, six hundred six".