2506697 has 2 divisors, whose sum is σ = 2506698. Its totient is φ = 2506696.

The previous prime is 2506687. The next prime is 2506717. The reversal of 2506697 is 7966052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 13456 = 1579^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506697 - 2⁴ = 2506681 is a prime.

It is not a weakly prime, because it can be changed into another prime (2506657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253348 + 1253349.

It is an arithmetic number, because the mean of its divisors is an integer number (1253349).

2^2506697 is an apocalyptic number.

It is an amenable number.

2506697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506697 is an equidigital number, since it uses as much as digits as its factorization.

2506697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2506697 is about 1583.2551910542. The cubic root of 2506697 is about 135.8419624747.

The spelling of 2506697 in words is "two million, five hundred six thousand, six hundred ninety-seven".