220307957 has 2 divisors, whose sum is σ = 220307958. Its totient is φ = 220307956.

The previous prime is 220307933. The next prime is 220308013. The reversal of 220307957 is 759703022.

220307957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159997201 + 60310756 = 12649^2 + 7766^2 .

It is a cyclic number.

It is not a de Polignac number, because 220307957 - 2⁸ = 220307701 is a prime.

It is a super-3 number, since 3×220307957³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220307057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110153978 + 110153979.

It is an arithmetic number, because the mean of its divisors is an integer number (110153979).

Almost surely, 2^220307957 is an apocalyptic number.

It is an amenable number.

220307957 is a deficient number, since it is larger than the sum of its proper divisors (1).

220307957 is an equidigital number, since it uses as much as digits as its factorization.

220307957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 220307957 is about 14842.7745721614. The cubic root of 220307957 is about 603.9626208539.

The spelling of 220307957 in words is "two hundred twenty million, three hundred seven thousand, nine hundred fifty-seven".