2640604620 has 48 divisors (see below), whose sum is σ = 7411326048. Its totient is φ = 702481920.

The previous prime is 2640604613. The next prime is 2640604627. The reversal of 2640604620 is 264060462.

It is an interprime number because it is at equal distance from previous prime (2640604613) and next prime (2640604627).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2640604627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27009 + ... + 77528.

It is an arithmetic number, because the mean of its divisors is an integer number (154402626).

Almost surely, 2^2640604620 is an apocalyptic number.

2640604620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640604620 is an abundant number, since it is smaller than the sum of its proper divisors (4770721428).

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

2640604620 is a wasteful number, since it uses less digits than its factorization.

2640604620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104970 (or 104968 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2640604620 is about 51386.8136782190. The cubic root of 2640604620 is about 1382.1901475469.

The spelling of 2640604620 in words is "two billion, six hundred forty million, six hundred four thousand, six hundred twenty".