656861214 has 8 divisors (see below), whose sum is σ = 1313722440. Its totient is φ = 218953736.

The previous prime is 656861131. The next prime is 656861239. The reversal of 656861214 is 412168656.

It is a happy number.

656861214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

656861214 is an admirable number.

It is a Curzon number.

It is a congruent number.

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, 54738429 + ... + 54738440.

It is an arithmetic number, because the mean of its divisors is an integer number (164215305).

Almost surely, 2^656861214 is an apocalyptic number.

656861214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656861214 is a wasteful number, since it uses less digits than its factorization.

656861214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109476874.

The product of its digits is 69120, while the sum is 39.

The square root of 656861214 is about 25629.3038141889. The cubic root of 656861214 is about 869.2763674938.

The spelling of 656861214 in words is "six hundred fifty-six million, eight hundred sixty-one thousand, two hundred fourteen".