656919214 has 16 divisors (see below), whose sum is σ = 1129822848. Its totient is φ = 280617912.

The previous prime is 656919209. The next prime is 656919217. The reversal of 656919214 is 412919656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656919217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72124 + ... + 80719.

It is an arithmetic number, because the mean of its divisors is an integer number (70613928).

Almost surely, 2^656919214 is an apocalyptic number.

656919214 is a deficient number, since it is larger than the sum of its proper divisors (472903634).

656919214 is a wasteful number, since it uses less digits than its factorization.

656919214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153159.

The product of its digits is 116640, while the sum is 43.

The square root of 656919214 is about 25630.4353064867. The cubic root of 656919214 is about 869.3019520690.

The spelling of 656919214 in words is "six hundred fifty-six million, nine hundred nineteen thousand, two hundred fourteen".