22700621 has 4 divisors (see below), whose sum is σ = 22715100. Its totient is φ = 22686144.

The previous prime is 22700569. The next prime is 22700651. The reversal of 22700621 is 12600722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 10176100 = 3539^2 + 3190^2 .

It is a cyclic number.

It is not a de Polignac number, because 22700621 - 2¹⁴ = 22684237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22700593 and 22700602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22700651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4556 + ... + 8133.

It is an arithmetic number, because the mean of its divisors is an integer number (5678775).

Almost surely, 2^22700621 is an apocalyptic number.

It is an amenable number.

22700621 is a deficient number, since it is larger than the sum of its proper divisors (14479).

22700621 is a wasteful number, since it uses less digits than its factorization.

22700621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14478.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 22700621 is about 4764.5168695262. The cubic root of 22700621 is about 283.1474008107.

The spelling of 22700621 in words is "twenty-two million, seven hundred thousand, six hundred twenty-one".