2613231660 has 48 divisors (see below), whose sum is σ = 7879900896. Its totient is φ = 643256832.

The previous prime is 2613231613. The next prime is 2613231667. The reversal of 2613231660 is 661323162.

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 (2613231667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1674369 + ... + 1675928.

It is an arithmetic number, because the mean of its divisors is an integer number (164164602).

Almost surely, 2^2613231660 is an apocalyptic number.

2613231660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2613231660 is an abundant number, since it is smaller than the sum of its proper divisors (5266669236).

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

2613231660 is a wasteful number, since it uses less digits than its factorization.

2613231660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350322 (or 3350320 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 2613231660 is about 51119.7775816758. Note that the first 3 decimals coincide. The cubic root of 2613231660 is about 1377.3975422338.

The spelling of 2613231660 in words is "two billion, six hundred thirteen million, two hundred thirty-one thousand, six hundred sixty".