20634601 has 8 divisors (see below), whose sum is σ = 22599360. Its totient is φ = 18723792.

The previous prime is 20634571. The next prime is 20634613. The reversal of 20634601 is 10643602.

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 20634601 - 2¹⁷ = 20503529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20634001) 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, 12685 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (2824920).

Almost surely, 2^20634601 is an apocalyptic number.

It is an amenable number.

20634601 is a deficient number, since it is larger than the sum of its proper divisors (1964759).

20634601 is a wasteful number, since it uses less digits than its factorization.

20634601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20634601 is about 4542.5324434725. The cubic root of 20634601 is about 274.2828742550.

Subtracting from 20634601 its reverse (10643602), we obtain a palindrome (9990999).

The spelling of 20634601 in words is "twenty million, six hundred thirty-four thousand, six hundred one".