2257660 has 24 divisors (see below), whose sum is σ = 4777920. Its totient is φ = 896064.

The previous prime is 2257649. The next prime is 2257667. The reversal of 2257660 is 667522.

It is a d-powerful number, because it can be written as 2³ + 2³ + 5⁹ + 7⁵ + 6⁵ + 6⁷ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257667) 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, 2781 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (199080).

2^2257660 is an apocalyptic number.

2257660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257660 is an abundant number, since it is smaller than the sum of its proper divisors (2520260).

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

2257660 is a wasteful number, since it uses less digits than its factorization.

2257660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 883 counting only the distinct ones).

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

The square root of 2257660 is about 1502.5511638543. The cubic root of 2257660 is about 131.1856040867.

The spelling of 2257660 in words is "two million, two hundred fifty-seven thousand, six hundred sixty".