2920660 has 12 divisors (see below), whose sum is σ = 6133428. Its totient is φ = 1168256.

The previous prime is 2920649. The next prime is 2920691. The reversal of 2920660 is 660292.

It can be written as a sum of positive squares in 2 ways, for example, as 1602756 + 1317904 = 1266^2 + 1148^2 .

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, 72997 + ... + 73036.

It is an arithmetic number, because the mean of its divisors is an integer number (511119).

2^2920660 is an apocalyptic number.

2920660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2920660 is an abundant number, since it is smaller than the sum of its proper divisors (3212768).

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

2920660 is a wasteful number, since it uses less digits than its factorization.

2920660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146042 (or 146040 counting only the distinct ones).

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

The square root of 2920660 is about 1708.9938560451. The cubic root of 2920660 is about 142.9421579684.

The spelling of 2920660 in words is "two million, nine hundred twenty thousand, six hundred sixty".