2622640660 has 96 divisors (see below), whose sum is σ = 6030581760. Its totient is φ = 954021888.

The previous prime is 2622640637. The next prime is 2622640667. The reversal of 2622640660 is 660462262.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2622640667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2049901 + ... + 2051179.

It is an arithmetic number, because the mean of its divisors is an integer number (62818560).

Almost surely, 2^2622640660 is an apocalyptic number.

2622640660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2622640660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3015290880).

2622640660 is an abundant number, since it is smaller than the sum of its proper divisors (3407941100).

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

2622640660 is a wasteful number, since it uses less digits than its factorization.

2622640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 2622640660 is about 51211.7238530397. The cubic root of 2622640660 is about 1379.0486792191.

The spelling of 2622640660 in words is "two billion, six hundred twenty-two million, six hundred forty thousand, six hundred sixty".