2506687 has 2 divisors, whose sum is σ = 2506688. Its totient is φ = 2506686.

The previous prime is 2506681. The next prime is 2506697. The reversal of 2506687 is 7866052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2506687 - 2¹¹ = 2504639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253343 + 1253344.

It is an arithmetic number, because the mean of its divisors is an integer number (1253344).

2^2506687 is an apocalyptic number.

2506687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506687 is an equidigital number, since it uses as much as digits as its factorization.

2506687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2506687 is about 1583.2520330004. The cubic root of 2506687 is about 135.8417818357.

The spelling of 2506687 in words is "two million, five hundred six thousand, six hundred eighty-seven".