656228601 has 32 divisors (see below), whose sum is σ = 1114725120. Its totient is φ = 373756032.

The previous prime is 656228581. The next prime is 656228603. The reversal of 656228601 is 106822656.

656228601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656228601 - 2⁶ = 656228537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (656228603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53611 + ... + 64703.

It is an arithmetic number, because the mean of its divisors is an integer number (34835160).

Almost surely, 2^656228601 is an apocalyptic number.

It is an amenable number.

656228601 is a deficient number, since it is larger than the sum of its proper divisors (458496519).

656228601 is a wasteful number, since it uses less digits than its factorization.

656228601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422 (or 11416 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 656228601 is about 25616.9592457809. The cubic root of 656228601 is about 868.9972155959.

The spelling of 656228601 in words is "six hundred fifty-six million, two hundred twenty-eight thousand, six hundred one".