2663902620 has 48 divisors (see below), whose sum is σ = 8287698720. Its totient is φ = 710373888.

The previous prime is 2663902603. The next prime is 2663902621. The reversal of 2663902620 is 262093662.

2663902620 is a `hidden beast` number, since 2 + 6 + 6 + 390 + 262 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663902621) 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, 2466037 + ... + 2467116.

It is an arithmetic number, because the mean of its divisors is an integer number (172660390).

Almost surely, 2^2663902620 is an apocalyptic number.

2663902620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663902620 is an abundant number, since it is smaller than the sum of its proper divisors (5623796100).

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

2663902620 is a wasteful number, since it uses less digits than its factorization.

2663902620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933171 (or 4933163 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2663902620 is about 51613.0082440464. The cubic root of 2663902620 is about 1386.2432623371.

The spelling of 2663902620 in words is "two billion, six hundred sixty-three million, nine hundred two thousand, six hundred twenty".