656707442 has 8 divisors (see below), whose sum is σ = 985205100. Its totient is φ = 328305744.

The previous prime is 656707427. The next prime is 656707463. The reversal of 656707442 is 244707656.

656707442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 510805201 + 145902241 = 22601^2 + 12079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 656707442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3317 + ... + 36392.

Almost surely, 2^656707442 is an apocalyptic number.

656707442 is a deficient number, since it is larger than the sum of its proper divisors (328497658).

656707442 is a wasteful number, since it uses less digits than its factorization.

656707442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47980.

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 656707442 is about 25626.3037131772. The cubic root of 656707442 is about 869.2085293189.

The spelling of 656707442 in words is "six hundred fifty-six million, seven hundred seven thousand, four hundred forty-two".