2555690 has 16 divisors (see below), whose sum is σ = 4842720. Its totient is φ = 968400.

The previous prime is 2555687. The next prime is 2555699. The reversal of 2555690 is 965552.

It is a super-2 number, since 2×2555690² = 13063102752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2555699) 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, 6536 + ... + 6915.

It is an arithmetic number, because the mean of its divisors is an integer number (302670).

2^2555690 is an apocalyptic number.

2555690 is a deficient number, since it is larger than the sum of its proper divisors (2287030).

2555690 is a wasteful number, since it uses less digits than its factorization.

2555690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13477.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 2555690 is about 1598.6525576247. The cubic root of 2555690 is about 136.7212618151.

The spelling of 2555690 in words is "two million, five hundred fifty-five thousand, six hundred ninety".