2620996680 has 64 divisors (see below), whose sum is σ = 8116646400. Its totient is φ = 676385280.

The previous prime is 2620996661. The next prime is 2620996681. The reversal of 2620996680 is 866990262.

It is not an unprimeable number, because it can be changed into a prime (2620996681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348565 + ... + 356004.

It is an arithmetic number, because the mean of its divisors is an integer number (126822600).

Almost surely, 2^2620996680 is an apocalyptic number.

2620996680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620996680 is an abundant number, since it is smaller than the sum of its proper divisors (5495649720).

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

2620996680 is a wasteful number, since it uses less digits than its factorization.

2620996680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704614 (or 704610 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 2620996680 is about 51195.6705200743. The cubic root of 2620996680 is about 1378.7604706770.

The spelling of 2620996680 in words is "two billion, six hundred twenty million, nine hundred ninety-six thousand, six hundred eighty".