656560146 has 32 divisors (see below), whose sum is σ = 1452681216. Its totient is φ = 196154000.

The previous prime is 656560133. The next prime is 656560147. The reversal of 656560146 is 641065656.

It is not an unprimeable number, because it can be changed into a prime (656560147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65370 + ... + 74741.

It is an arithmetic number, because the mean of its divisors is an integer number (45396288).

Almost surely, 2^656560146 is an apocalyptic number.

656560146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

656560146 is an abundant number, since it is smaller than the sum of its proper divisors (796121070).

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

656560146 is a wasteful number, since it uses less digits than its factorization.

656560146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140198.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 656560146 is about 25623.4296299305. The cubic root of 656560146 is about 869.1435381702.

The spelling of 656560146 in words is "six hundred fifty-six million, five hundred sixty thousand, one hundred forty-six".