2597906 has 16 divisors (see below), whose sum is σ = 4169880. Its totient is φ = 1209600.

The previous prime is 2597899. The next prime is 2597909. The reversal of 2597906 is 6097952.

It can be written as a sum of positive squares in 4 ways, for example, as 2588881 + 9025 = 1609^2 + 95^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2597906.

It is not an unprimeable number, because it can be changed into a prime (2597909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356 + ... + 4056.

2^2597906 is an apocalyptic number.

2597906 is a deficient number, since it is larger than the sum of its proper divisors (1571974).

2597906 is a wasteful number, since it uses less digits than its factorization.

2597906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 2597906 is about 1611.8020970330. The cubic root of 2597906 is about 137.4699614823.

The spelling of 2597906 in words is "two million, five hundred ninety-seven thousand, nine hundred six".