22701985 has 4 divisors (see below), whose sum is σ = 27242388. Its totient is φ = 18161584.

The previous prime is 22701971. The next prime is 22701997. The reversal of 22701985 is 58910722.

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 4460544 + 18241441 = 2112^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 22701985 - 2⁷ = 22701857 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 22701985.

It is an unprimeable number.

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, 2270194 + ... + 2270203.

It is an arithmetic number, because the mean of its divisors is an integer number (6810597).

Almost surely, 2^22701985 is an apocalyptic number.

It is an amenable number.

22701985 is a deficient number, since it is larger than the sum of its proper divisors (4540403).

22701985 is an equidigital number, since it uses as much as digits as its factorization.

22701985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540402.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 22701985 is about 4764.6600088569. The cubic root of 22701985 is about 283.1530718056.

The spelling of 22701985 in words is "twenty-two million, seven hundred one thousand, nine hundred eighty-five".