16622513 has 2 divisors, whose sum is σ = 16622514. Its totient is φ = 16622512.

The previous prime is 16622407. The next prime is 16622519. The reversal of 16622513 is 31522661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8596624 + 8025889 = 2932^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 16622513 - 2⁸ = 16622257 is a prime.

It is not a weakly prime, because it can be changed into another prime (16622519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8311256 + 8311257.

It is an arithmetic number, because the mean of its divisors is an integer number (8311257).

Almost surely, 2^16622513 is an apocalyptic number.

It is an amenable number.

16622513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16622513 is an equidigital number, since it uses as much as digits as its factorization.

16622513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 16622513 is about 4077.0716206611. The cubic root of 16622513 is about 255.2107088351.

The spelling of 16622513 in words is "sixteen million, six hundred twenty-two thousand, five hundred thirteen".