2523660 has 24 divisors (see below), whose sum is σ = 7066416. Its totient is φ = 672960.

The previous prime is 2523643. The next prime is 2523671. The reversal of 2523660 is 663252.

It is a self number, because there is not a number n which added to its sum of digits gives 2523660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20971 + ... + 21090.

It is an arithmetic number, because the mean of its divisors is an integer number (294434).

2^2523660 is an apocalyptic number.

2523660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2523660 is an abundant number, since it is smaller than the sum of its proper divisors (4542756).

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

2523660 is a wasteful number, since it uses less digits than its factorization.

2523660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42073 (or 42071 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2523660 is about 1588.6031600120. The cubic root of 2523660 is about 136.1476913420.

The spelling of 2523660 in words is "two million, five hundred twenty-three thousand, six hundred sixty".