2687957 has 2 divisors, whose sum is σ = 2687958. Its totient is φ = 2687956.

The previous prime is 2687953. The next prime is 2687969. The reversal of 2687957 is 7597862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2033476 + 654481 = 1426^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687957 - 2² = 2687953 is a prime.

It is a super-2 number, since 2×2687957² = 14450225667698, which contains 22 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 (2687953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343978 + 1343979.

It is an arithmetic number, because the mean of its divisors is an integer number (1343979).

2^2687957 is an apocalyptic number.

It is an amenable number.

2687957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687957 is an equidigital number, since it uses as much as digits as its factorization.

2687957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 2687957 is about 1639.4990088439. The cubic root of 2687957 is about 139.0403243771.

The spelling of 2687957 in words is "two million, six hundred eighty-seven thousand, nine hundred fifty-seven".