2605363660 has 24 divisors (see below), whose sum is σ = 5504032800. Its totient is φ = 1035903744.

The previous prime is 2605363639. The next prime is 2605363667. The reversal of 2605363660 is 663635062.

2605363660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2605363667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386685 + ... + 393364.

It is an arithmetic number, because the mean of its divisors is an integer number (229334700).

Almost surely, 2^2605363660 is an apocalyptic number.

2605363660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605363660 is an abundant number, since it is smaller than the sum of its proper divisors (2898669140).

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

2605363660 is a wasteful number, since it uses less digits than its factorization.

2605363660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780225 (or 780223 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 2605363660 is about 51042.7630521703. The cubic root of 2605363660 is about 1376.0137819457.

It can be divided in two parts, 260536 and 3660, that added together give a square (264196 = 514²).

The spelling of 2605363660 in words is "two billion, six hundred five million, three hundred sixty-three thousand, six hundred sixty".