656155426 has 12 divisors (see below), whose sum is σ = 1045535778. Its totient is φ = 308778752.

The previous prime is 656155411. The next prime is 656155427. The reversal of 656155426 is 624551656.

It can be written as a sum of positive squares in 3 ways, for example, as 652751401 + 3404025 = 25549^2 + 1845^2 .

It is not an unprimeable number, because it can be changed into a prime (656155427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567031 + ... + 568186.

Almost surely, 2^656155426 is an apocalyptic number.

656155426 is a deficient number, since it is larger than the sum of its proper divisors (389380352).

656155426 is a wasteful number, since it uses less digits than its factorization.

656155426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135253 (or 1135236 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The square root of 656155426 is about 25615.5309529199. The cubic root of 656155426 is about 868.9649142328.

The spelling of 656155426 in words is "six hundred fifty-six million, one hundred fifty-five thousand, four hundred twenty-six".