22676645 has 4 divisors (see below), whose sum is σ = 27211980. Its totient is φ = 18141312.

The previous prime is 22676639. The next prime is 22676653. The reversal of 22676645 is 54667622.

It is a Cunningham number, because it is equal to 4762²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54667622 = 2 ⋅27333811.

It can be written as a sum of positive squares in 2 ways, for example, as 8168164 + 14508481 = 2858^2 + 3809^2 .

It is a cyclic number.

It is not a de Polignac number, because 22676645 - 2⁴ = 22676629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22676599 and 22676608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267660 + ... + 2267669.

It is an arithmetic number, because the mean of its divisors is an integer number (6802995).

Almost surely, 2^22676645 is an apocalyptic number.

It is an amenable number.

22676645 is a deficient number, since it is larger than the sum of its proper divisors (4535335).

22676645 is an equidigital number, since it uses as much as digits as its factorization.

22676645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535334.

The product of its digits is 120960, while the sum is 38.

The square root of 22676645 is about 4762.0001049979. Note that the first 3 decimals coincide. The cubic root of 22676645 is about 283.0476805793.

The spelling of 22676645 in words is "twenty-two million, six hundred seventy-six thousand, six hundred forty-five".