2689957 has 2 divisors, whose sum is σ = 2689958. Its totient is φ = 2689956.

The previous prime is 2689943. The next prime is 2689979. The reversal of 2689957 is 7599862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 690561 = 1414^2 + 831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689957 - 2¹⁵ = 2657189 is a prime.

2689957 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344978 + 1344979.

It is an arithmetic number, because the mean of its divisors is an integer number (1344979).

2^2689957 is an apocalyptic number.

It is an amenable number.

2689957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689957 is an equidigital number, since it uses as much as digits as its factorization.

2689957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 2689957 is about 1640.1088378519. The cubic root of 2689957 is about 139.0748005868.

The spelling of 2689957 in words is "two million, six hundred eighty-nine thousand, nine hundred fifty-seven".