220695657 has 48 divisors (see below), whose sum is σ = 375762240. Its totient is φ = 114162048.

The previous prime is 220695641. The next prime is 220695689. The reversal of 220695657 is 756596022.

220695657 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 220695657 - 2⁴ = 220695641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220695617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100194 + ... + 102372.

It is an arithmetic number, because the mean of its divisors is an integer number (7828380).

Almost surely, 2^220695657 is an apocalyptic number.

It is an amenable number.

220695657 is a deficient number, since it is larger than the sum of its proper divisors (155066583).

220695657 is a wasteful number, since it uses less digits than its factorization.

220695657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 220695657 is about 14855.8290579826. The cubic root of 220695657 is about 604.3166995847.

The spelling of 220695657 in words is "two hundred twenty million, six hundred ninety-five thousand, six hundred fifty-seven".