2620990 has 16 divisors (see below), whose sum is σ = 4737600. Its totient is φ = 1044000.

The previous prime is 2620967. The next prime is 2620999. The reversal of 2620990 is 990262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620999) 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, 3115 + ... + 3865.

It is an arithmetic number, because the mean of its divisors is an integer number (296100).

2^2620990 is an apocalyptic number.

2620990 is a deficient number, since it is larger than the sum of its proper divisors (2116610).

2620990 is a wasteful number, since it uses less digits than its factorization.

2620990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2620990 is about 1618.9471887619. The cubic root of 2620990 is about 137.8759299351.

The spelling of 2620990 in words is "two million, six hundred twenty thousand, nine hundred ninety".