20988601 has 8 divisors (see below), whose sum is σ = 21843360. Its totient is φ = 20150592.

The previous prime is 20988599. The next prime is 20988607. The reversal of 20988601 is 10688902.

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

It is a cyclic number.

It is not a de Polignac number, because 20988601 - 2¹ = 20988599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20988607) 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, 1600 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (2730420).

Almost surely, 2^20988601 is an apocalyptic number.

It is an amenable number.

20988601 is a deficient number, since it is larger than the sum of its proper divisors (854759).

20988601 is an equidigital number, since it uses as much as digits as its factorization.

20988601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8375.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 20988601 is about 4581.3317932671. The cubic root of 20988601 is about 275.8424895926.

The spelling of 20988601 in words is "twenty million, nine hundred eighty-eight thousand, six hundred one".