2599620648 has 16 divisors (see below), whose sum is σ = 6499051680. Its totient is φ = 866540208.

The previous prime is 2599620631. The next prime is 2599620677. The reversal of 2599620648 is 8460269952.

It is a self number, because there is not a number n which added to its sum of digits gives 2599620648.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 54158740 + ... + 54158787.

It is an arithmetic number, because the mean of its divisors is an integer number (406190730).

Almost surely, 2^2599620648 is an apocalyptic number.

It is an amenable number.

2599620648 is an abundant number, since it is smaller than the sum of its proper divisors (3899431032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2599620648 is a wasteful number, since it uses less digits than its factorization.

2599620648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108317536 (or 108317532 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 2599620648 is about 50986.4751478272. The cubic root of 2599620648 is about 1375.0019875233.

The spelling of 2599620648 in words is "two billion, five hundred ninety-nine million, six hundred twenty thousand, six hundred forty-eight".