2507689 has 2 divisors, whose sum is σ = 2507690. Its totient is φ = 2507688.

The previous prime is 2507671. The next prime is 2507693. The reversal of 2507689 is 9867052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937664 + 570025 = 1392^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2507689 - 2¹¹ = 2505641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2507629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253844 + 1253845.

It is an arithmetic number, because the mean of its divisors is an integer number (1253845).

2^2507689 is an apocalyptic number.

It is an amenable number.

2507689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507689 is an equidigital number, since it uses as much as digits as its factorization.

2507689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2507689 is about 1583.5684386852. The cubic root of 2507689 is about 135.8598794726.

The spelling of 2507689 in words is "two million, five hundred seven thousand, six hundred eighty-nine".