656135424 has 288 divisors, whose sum is σ = 2260500480. Its totient is φ = 183859200.

The previous prime is 656135413. The next prime is 656135453. The reversal of 656135424 is 424531656.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 3435169 + ... + 3435359.

It is an arithmetic number, because the mean of its divisors is an integer number (7848960).

Almost surely, 2^656135424 is an apocalyptic number.

656135424 is a gapful number since it is divisible by the number (64) 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 656135424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130250240).

656135424 is an abundant number, since it is smaller than the sum of its proper divisors (1604365056).

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

656135424 is a wasteful number, since it uses less digits than its factorization.

656135424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 274 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 656135424 is about 25615.1405227455. The cubic root of 656135424 is about 868.9560844077.

The spelling of 656135424 in words is "six hundred fifty-six million, one hundred thirty-five thousand, four hundred twenty-four".