2660920 has 16 divisors (see below), whose sum is σ = 5987160. Its totient is φ = 1064352.

The previous prime is 2660899. The next prime is 2660963. The reversal of 2660920 is 290662.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33222 + ... + 33301.

2^2660920 is an apocalyptic number.

2660920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660920 is an abundant number, since it is smaller than the sum of its proper divisors (3326240).

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

2660920 is a wasteful number, since it uses less digits than its factorization.

2660920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66534 (or 66530 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2660920 is about 1631.2326627431. The cubic root of 2660920 is about 138.5725703260.

The spelling of 2660920 in words is "two million, six hundred sixty thousand, nine hundred twenty".