22636001 has 4 divisors (see below), whose sum is σ = 22855872. Its totient is φ = 22416132.

The previous prime is 22635997. The next prime is 22636013. The reversal of 22636001 is 10063622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10063622 = 2 ⋅5031811.

It is a cyclic number.

It is not a de Polignac number, because 22636001 - 2² = 22635997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22636021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109781 + ... + 109986.

It is an arithmetic number, because the mean of its divisors is an integer number (5713968).

Almost surely, 2^22636001 is an apocalyptic number.

It is an amenable number.

22636001 is a deficient number, since it is larger than the sum of its proper divisors (219871).

22636001 is a wasteful number, since it uses less digits than its factorization.

22636001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219870.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 22636001 is about 4757.7306565210. The cubic root of 22636001 is about 282.8784746278.

Adding to 22636001 its reverse (10063622), we get a palindrome (32699623).

The spelling of 22636001 in words is "twenty-two million, six hundred thirty-six thousand, one".