656040046 has 16 divisors (see below), whose sum is σ = 995405760. Its totient is φ = 324248800.

The previous prime is 656040041. The next prime is 656040067. The reversal of 656040046 is 640040656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656040041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142980 + ... + 147496.

It is an arithmetic number, because the mean of its divisors is an integer number (62212860).

Almost surely, 2^656040046 is an apocalyptic number.

656040046 is a deficient number, since it is larger than the sum of its proper divisors (339365714).

656040046 is a wasteful number, since it uses less digits than its factorization.

656040046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 656040046 is about 25613.2787046095. The cubic root of 656040046 is about 868.9139775974.

The spelling of 656040046 in words is "six hundred fifty-six million, forty thousand, forty-six".