656462136 has 128 divisors (see below), whose sum is σ = 1895063040. Its totient is φ = 187545600.

The previous prime is 656462119. The next prime is 656462243. The reversal of 656462136 is 631264656.

It is a junction number, because it is equal to n+sod(n) for n = 656462094 and 656462103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442516 + ... + 443996.

It is an arithmetic number, because the mean of its divisors is an integer number (14805180).

Almost surely, 2^656462136 is an apocalyptic number.

656462136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656462136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947531520).

656462136 is an abundant number, since it is smaller than the sum of its proper divisors (1238600904).

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

656462136 is a wasteful number, since it uses less digits than its factorization.

656462136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1593 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 656462136 is about 25621.5170511037. The cubic root of 656462136 is about 869.1002880086.

The spelling of 656462136 in words is "six hundred fifty-six million, four hundred sixty-two thousand, one hundred thirty-six".