22700905 has 4 divisors (see below), whose sum is σ = 27241092. Its totient is φ = 18160720.

The previous prime is 22700903. The next prime is 22700917. The reversal of 22700905 is 50900722.

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 10942864 + 11758041 = 3308^2 + 3429^2 .

It is not a de Polignac number, because 22700905 - 2¹ = 22700903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22700905.

It is not an unprimeable number, because it can be changed into a prime (22700903) 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, 2270086 + ... + 2270095.

It is an arithmetic number, because the mean of its divisors is an integer number (6810273).

Almost surely, 2^22700905 is an apocalyptic number.

It is an amenable number.

22700905 is a deficient number, since it is larger than the sum of its proper divisors (4540187).

22700905 is an equidigital number, since it uses as much as digits as its factorization.

22700905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540186.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 22700905 is about 4764.5466730844. The cubic root of 22700905 is about 283.1485815937.

The spelling of 22700905 in words is "twenty-two million, seven hundred thousand, nine hundred five".