13557673 has 2 divisors, whose sum is σ = 13557674. Its totient is φ = 13557672.

The previous prime is 13557641. The next prime is 13557679. The reversal of 13557673 is 37675531.

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., 12873744 + 683929 = 3588^2 + 827^2 .

It is an emirp because it is prime and its reverse (37675531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13557673 - 2⁵ = 13557641 is a prime.

It is a super-3 number, since 3×13557673³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13557679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6778836 + 6778837.

It is an arithmetic number, because the mean of its divisors is an integer number (6778837).

Almost surely, 2^13557673 is an apocalyptic number.

It is an amenable number.

13557673 is a deficient number, since it is larger than the sum of its proper divisors (1).

13557673 is an equidigital number, since it uses as much as digits as its factorization.

13557673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 37.

The square root of 13557673 is about 3682.0745511192. The cubic root of 13557673 is about 238.4487508311.

The spelling of 13557673 in words is "thirteen million, five hundred fifty-seven thousand, six hundred seventy-three".