22705999 has 4 divisors (see below), whose sum is σ = 24041664. Its totient is φ = 21370336.

The previous prime is 22705979. The next prime is 22706003. The reversal of 22705999 is 99950722.

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

It is a cyclic number.

It is not a de Polignac number, because 22705999 - 2¹¹ = 22703951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22705909) 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, 667807 + ... + 667840.

It is an arithmetic number, because the mean of its divisors is an integer number (6010416).

Almost surely, 2^22705999 is an apocalyptic number.

22705999 is a deficient number, since it is larger than the sum of its proper divisors (1335665).

22705999 is a wasteful number, since it uses less digits than its factorization.

22705999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335664.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 22705999 is about 4765.0812165167. The cubic root of 22705999 is about 283.1697591782.

The spelling of 22705999 in words is "twenty-two million, seven hundred five thousand, nine hundred ninety-nine".