2539660 has 24 divisors (see below), whose sum is σ = 5566176. Its totient is φ = 971520.

The previous prime is 2539657. The next prime is 2539661. The reversal of 2539660 is 669352.

It is not an unprimeable number, because it can be changed into a prime (2539661) 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, 2301 + ... + 3220.

It is an arithmetic number, because the mean of its divisors is an integer number (231924).

2^2539660 is an apocalyptic number.

2539660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2539660 is an abundant number, since it is smaller than the sum of its proper divisors (3026516).

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

2539660 is a wasteful number, since it uses less digits than its factorization.

2539660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553 (or 5551 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2539660 is about 1593.6310739942. The cubic root of 2539660 is about 136.4348107905.

The spelling of 2539660 in words is "two million, five hundred thirty-nine thousand, six hundred sixty".