22678705 has 8 divisors (see below), whose sum is σ = 31102272. Its totient is φ = 15551088.

The previous prime is 22678693. The next prime is 22678709. The reversal of 22678705 is 50787622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22678705 - 2⁹ = 22678193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22678709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323947 + ... + 324016.

It is an arithmetic number, because the mean of its divisors is an integer number (3887784).

Almost surely, 2^22678705 is an apocalyptic number.

It is an amenable number.

22678705 is a deficient number, since it is larger than the sum of its proper divisors (8423567).

22678705 is an equidigital number, since it uses as much as digits as its factorization.

22678705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647975.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 22678705 is about 4762.2163957552. The cubic root of 22678705 is about 283.0562512264.

The spelling of 22678705 in words is "twenty-two million, six hundred seventy-eight thousand, seven hundred five".