20902601 has 8 divisors (see below), whose sum is σ = 21684960. Its totient is φ = 20133792.

The previous prime is 20902589. The next prime is 20902633. The reversal of 20902601 is 10620902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20902601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20902691) 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, 191 + ... + 6468.

It is an arithmetic number, because the mean of its divisors is an integer number (2710620).

Almost surely, 2^20902601 is an apocalyptic number.

It is an amenable number.

20902601 is a deficient number, since it is larger than the sum of its proper divisors (782359).

20902601 is an equidigital number, since it uses as much as digits as its factorization.

20902601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6775.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20902601 is about 4571.9362419001. The cubic root of 20902601 is about 275.4652224484.

The spelling of 20902601 in words is "twenty million, nine hundred two thousand, six hundred one".