2499307668 has 144 divisors (see below), whose sum is σ = 7662100992. Its totient is φ = 676512000.

The previous prime is 2499307621. The next prime is 2499307687. The reversal of 2499307668 is 8667039942.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151758 + ... + 167418.

Almost surely, 2^2499307668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499307668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3831050496).

2499307668 is an abundant number, since it is smaller than the sum of its proper divisors (5162793324).

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

2499307668 is a wasteful number, since it uses less digits than its factorization.

2499307668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15726 (or 15721 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 2499307668 is about 49993.0762006100. The cubic root of 2499307668 is about 1357.0835115187.

The spelling of 2499307668 in words is "two billion, four hundred ninety-nine million, three hundred seven thousand, six hundred sixty-eight".