656757242 has 16 divisors (see below), whose sum is σ = 1000102464. Its totient is φ = 323400000.

The previous prime is 656757223. The next prime is 656757253. The reversal of 656757242 is 242757656.

It is a junction number, because it is equal to n+sod(n) for n = 656757193 and 656757202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168617 + ... + 172467.

It is an arithmetic number, because the mean of its divisors is an integer number (62506404).

Almost surely, 2^656757242 is an apocalyptic number.

656757242 is a deficient number, since it is larger than the sum of its proper divisors (343345222).

656757242 is a wasteful number, since it uses less digits than its factorization.

656757242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125.

The product of its digits is 705600, while the sum is 44.

The square root of 656757242 is about 25627.2753526394. The cubic root of 656757242 is about 869.2305002849.

The spelling of 656757242 in words is "six hundred fifty-six million, seven hundred fifty-seven thousand, two hundred forty-two".