2656990 has 16 divisors (see below), whose sum is σ = 5465952. Its totient is φ = 910944.

The previous prime is 2656987. The next prime is 2656991. The reversal of 2656990 is 996562.

It is a happy number.

2656990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656991) 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, 18909 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (341622).

2^2656990 is an apocalyptic number.

2656990 is an abundant number, since it is smaller than the sum of its proper divisors (2808962).

2656990 is a wasteful number, since it uses less digits than its factorization.

2656990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37971.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 2656990 is about 1630.0276071282. The cubic root of 2656990 is about 138.5043159216.

The spelling of 2656990 in words is "two million, six hundred fifty-six thousand, nine hundred ninety".