17620013 has 2 divisors, whose sum is σ = 17620014. Its totient is φ = 17620012.

The previous prime is 17619991. The next prime is 17620019. The reversal of 17620013 is 31002671.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17330569 + 289444 = 4163^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 17620013 - 2²⁰ = 16571437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17620019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8810006 + 8810007.

It is an arithmetic number, because the mean of its divisors is an integer number (8810007).

Almost surely, 2^17620013 is an apocalyptic number.

It is an amenable number.

17620013 is a deficient number, since it is larger than the sum of its proper divisors (1).

17620013 is an equidigital number, since it uses as much as digits as its factorization.

17620013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 17620013 is about 4197.6199208599. The cubic root of 17620013 is about 260.2168457228.

Adding to 17620013 its reverse (31002671), we get a palindrome (48622684).

The spelling of 17620013 in words is "seventeen million, six hundred twenty thousand, thirteen".