2725660 has 24 divisors (see below), whose sum is σ = 6541920. Its totient is φ = 934464.

The previous prime is 2725649. The next prime is 2725669. The reversal of 2725660 is 665272.

2725660 = 621² + 622² + ... + 627².

2725660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9595 + ... + 9874.

It is an arithmetic number, because the mean of its divisors is an integer number (272580).

2^2725660 is an apocalyptic number.

2725660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2725660 is an abundant number, since it is smaller than the sum of its proper divisors (3816260).

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

2725660 is a wasteful number, since it uses less digits than its factorization.

2725660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19485 (or 19483 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2725660 is about 1650.9572980547. The cubic root of 2725660 is about 139.6873977564.

The spelling of 2725660 in words is "two million, seven hundred twenty-five thousand, six hundred sixty".