2500660 has 24 divisors (see below), whose sum is σ = 5309640. Its totient is φ = 989184.

The previous prime is 2500651. The next prime is 2500669. The reversal of 2500660 is 660052.

It is an interprime number because it is at equal distance from previous prime (2500651) and next prime (2500669).

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 1999396 = 708^2 + 1414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500669) 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, 1296 + ... + 2584.

It is an arithmetic number, because the mean of its divisors is an integer number (221235).

2^2500660 is an apocalyptic number.

2500660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500660 is an abundant number, since it is smaller than the sum of its proper divisors (2808980).

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

2500660 is a wasteful number, since it uses less digits than its factorization.

2500660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2500660 is about 1581.3475266367. The cubic root of 2500660 is about 135.7328232164.

It can be divided in two parts, 2500 and 660, that added together give a triangular number (3160 = T₇₉).

The spelling of 2500660 in words is "two million, five hundred thousand, six hundred sixty".