16626013 has 4 divisors (see below), whose sum is σ = 17162368. Its totient is φ = 16089660.

The previous prime is 16625971. The next prime is 16626031. The reversal of 16626013 is 31062661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31062661 = 7 ⋅4437523.

It is a cyclic number.

It is not a de Polignac number, because 16626013 - 2¹⁷ = 16494941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16626053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268131 + ... + 268192.

It is an arithmetic number, because the mean of its divisors is an integer number (4290592).

Almost surely, 2^16626013 is an apocalyptic number.

It is an amenable number.

16626013 is a deficient number, since it is larger than the sum of its proper divisors (536355).

16626013 is an equidigital number, since it uses as much as digits as its factorization.

16626013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536354.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16626013 is about 4077.5008277130. The cubic root of 16626013 is about 255.2286197811.

Adding to 16626013 its reverse (31062661), we get a palindrome (47688674).

The spelling of 16626013 in words is "sixteen million, six hundred twenty-six thousand, thirteen".