656730746 has 8 divisors (see below), whose sum is σ = 1125824160. Its totient is φ = 281456028.

The previous prime is 656730727. The next prime is 656730779. The reversal of 656730746 is 647037656.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656730697 and 656730706.

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, 23454656 + ... + 23454683.

It is an arithmetic number, because the mean of its divisors is an integer number (140728020).

Almost surely, 2^656730746 is an apocalyptic number.

656730746 is a deficient number, since it is larger than the sum of its proper divisors (469093414).

656730746 is a wasteful number, since it uses less digits than its factorization.

656730746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46909348.

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 656730746 is about 25626.7583982056. The cubic root of 656730746 is about 869.2188108104.

The spelling of 656730746 in words is "six hundred fifty-six million, seven hundred thirty thousand, seven hundred forty-six".