2641657 has 2 divisors, whose sum is σ = 2641658. Its totient is φ = 2641656.

The previous prime is 2641649. The next prime is 2641663. The reversal of 2641657 is 7561462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 712336 = 1389^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641657 - 2³ = 2641649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2641637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320828 + 1320829.

It is an arithmetic number, because the mean of its divisors is an integer number (1320829).

2^2641657 is an apocalyptic number.

It is an amenable number.

2641657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641657 is an equidigital number, since it uses as much as digits as its factorization.

2641657 is an evil number, because the sum of its binary digits is even.

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

The square root of 2641657 is about 1625.3175074428. The cubic root of 2641657 is about 138.2373741368.

The spelling of 2641657 in words is "two million, six hundred forty-one thousand, six hundred fifty-seven".