2668640412 has 24 divisors (see below), whose sum is σ = 6497559936. Its totient is φ = 850870768.

The previous prime is 2668640411. The next prime is 2668640413. The reversal of 2668640412 is 2140468662.

It is an interprime number because it is at equal distance from previous prime (2668640411) and next prime (2668640413).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668640411) 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, 4834218 + ... + 4834769.

It is an arithmetic number, because the mean of its divisors is an integer number (270731664).

Almost surely, 2^2668640412 is an apocalyptic number.

It is an amenable number.

2668640412 is an abundant number, since it is smaller than the sum of its proper divisors (3828919524).

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

2668640412 is a wasteful number, since it uses less digits than its factorization.

2668640412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669017 (or 9669015 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 2668640412 is about 51658.8851215355. The cubic root of 2668640412 is about 1387.0645939713.

The spelling of 2668640412 in words is "two billion, six hundred sixty-eight million, six hundred forty thousand, four hundred twelve".