22643705 has 16 divisors (see below), whose sum is σ = 31135104. Its totient is φ = 15486720.

The previous prime is 22643701. The next prime is 22643713. The reversal of 22643705 is 50734622.

It is not a de Polignac number, because 22643705 - 2² = 22643701 is a prime.

It is a super-2 number, since 2×22643705² = 1025474752254050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22643701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20210 + ... + 21300.

It is an arithmetic number, because the mean of its divisors is an integer number (1945944).

Almost surely, 2^22643705 is an apocalyptic number.

It is an amenable number.

22643705 is a deficient number, since it is larger than the sum of its proper divisors (8491399).

22643705 is a wasteful number, since it uses less digits than its factorization.

22643705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 22643705 is about 4758.5402173356. The cubic root of 22643705 is about 282.9105628720.

The spelling of 22643705 in words is "twenty-two million, six hundred forty-three thousand, seven hundred five".