2887657 has 2 divisors, whose sum is σ = 2887658. Its totient is φ = 2887656.

The previous prime is 2887649. The next prime is 2887663. The reversal of 2887657 is 7567882.

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., 1879641 + 1008016 = 1371^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2887657 - 2³ = 2887649 is a prime.

2887657 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2887607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1443828 + 1443829.

It is an arithmetic number, because the mean of its divisors is an integer number (1443829).

2^2887657 is an apocalyptic number.

It is an amenable number.

2887657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2887657 is an equidigital number, since it uses as much as digits as its factorization.

2887657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 2887657 is about 1699.3107426248. The cubic root of 2887657 is about 142.4017091755.

The spelling of 2887657 in words is "two million, eight hundred eighty-seven thousand, six hundred fifty-seven".