2597646887 has 16 divisors (see below), whose sum is σ = 2965876992. Its totient is φ = 2252046720.

The previous prime is 2597646853. The next prime is 2597646893. The reversal of 2597646887 is 7886467952.

It is not a de Polignac number, because 2597646887 - 2¹⁰ = 2597645863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2597646817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70028 + ... + 100494.

It is an arithmetic number, because the mean of its divisors is an integer number (185367312).

Almost surely, 2^2597646887 is an apocalyptic number.

2597646887 is a deficient number, since it is larger than the sum of its proper divisors (368230105).

2597646887 is a wasteful number, since it uses less digits than its factorization.

2597646887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30838.

The product of its digits is 40642560, while the sum is 62.

The square root of 2597646887 is about 50967.1157414268. The cubic root of 2597646887 is about 1374.6539095016.

The spelling of 2597646887 in words is "two billion, five hundred ninety-seven million, six hundred forty-six thousand, eight hundred eighty-seven".