656701478 has 16 divisors (see below), whose sum is σ = 1013278896. Its totient is φ = 319071840.

The previous prime is 656701459. The next prime is 656701499. The reversal of 656701478 is 874107656.

It is an alternating number because its digits alternate between even and odd.

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 7 ways as a sum of consecutive naturals, for example, 22301 + ... + 42552.

It is an arithmetic number, because the mean of its divisors is an integer number (63329931).

Almost surely, 2^656701478 is an apocalyptic number.

656701478 is a deficient number, since it is larger than the sum of its proper divisors (356577418).

656701478 is a wasteful number, since it uses less digits than its factorization.

656701478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64999.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 656701478 is about 25626.1873481016. The cubic root of 656701478 is about 869.2058980227.

The spelling of 656701478 in words is "six hundred fifty-six million, seven hundred one thousand, four hundred seventy-eight".