16622945 has 8 divisors (see below), whose sum is σ = 20635560. Its totient is φ = 12839680.

The previous prime is 16622939. The next prime is 16622959. The reversal of 16622945 is 54922661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 12967201 = 1912^2 + 3601^2 .

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

It is not a de Polignac number, because 16622945 - 2¹⁴ = 16606561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57176 + ... + 57465.

It is an arithmetic number, because the mean of its divisors is an integer number (2579445).

Almost surely, 2^16622945 is an apocalyptic number.

It is an amenable number.

16622945 is a deficient number, since it is larger than the sum of its proper divisors (4012615).

16622945 is a wasteful number, since it uses less digits than its factorization.

16622945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114675.

The product of its digits is 25920, while the sum is 35.

The square root of 16622945 is about 4077.1245995186. The cubic root of 16622945 is about 255.2129196936.

The spelling of 16622945 in words is "sixteen million, six hundred twenty-two thousand, nine hundred forty-five".