162220657 has 2 divisors, whose sum is σ = 162220658. Its totient is φ = 162220656.

The previous prime is 162220649. The next prime is 162220687. The reversal of 162220657 is 756022261.

162220657 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., 151191616 + 11029041 = 12296^2 + 3321^2 .

It is a cyclic number.

It is not a de Polignac number, because 162220657 - 2³ = 162220649 is a prime.

It is not a weakly prime, because it can be changed into another prime (162220607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81110328 + 81110329.

It is an arithmetic number, because the mean of its divisors is an integer number (81110329).

Almost surely, 2^162220657 is an apocalyptic number.

It is an amenable number.

162220657 is a deficient number, since it is larger than the sum of its proper divisors (1).

162220657 is an equidigital number, since it uses as much as digits as its factorization.

162220657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 162220657 is about 12736.5873372737. The cubic root of 162220657 is about 545.3835719666.

The spelling of 162220657 in words is "one hundred sixty-two million, two hundred twenty thousand, six hundred fifty-seven".