20590660 has 12 divisors (see below), whose sum is σ = 43240428. Its totient is φ = 8236256.

The previous prime is 20590657. The next prime is 20590693. The reversal of 20590660 is 6609502.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 5098564 = 3936^2 + 2258^2 .

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, 514747 + ... + 514786.

It is an arithmetic number, because the mean of its divisors is an integer number (3603369).

Almost surely, 2^20590660 is an apocalyptic number.

20590660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20590660 is an abundant number, since it is smaller than the sum of its proper divisors (22649768).

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

20590660 is a wasteful number, since it uses less digits than its factorization.

20590660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029542 (or 1029540 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20590660 is about 4537.6932465736. The cubic root of 20590660 is about 274.0880424619.

The spelling of 20590660 in words is "twenty million, five hundred ninety thousand, six hundred sixty".