890657 has 2 divisors, whose sum is σ = 890658. Its totient is φ = 890656.

The previous prime is 890653. The next prime is 890671. The reversal of 890657 is 756098.

890657 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., 817216 + 73441 = 904^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 890657 - 2² = 890653 is a prime.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 890657.

It is not a weakly prime, because it can be changed into another prime (890653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445328 + 445329.

It is an arithmetic number, because the mean of its divisors is an integer number (445329).

2⁸⁹⁰⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

890657 is a deficient number, since it is larger than the sum of its proper divisors (1).

890657 is an equidigital number, since it uses as much as digits as its factorization.

890657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 890657 is about 943.7462582707. The cubic root of 890657 is about 96.2136805679.

The spelling of 890657 in words is "eight hundred ninety thousand, six hundred fifty-seven".