13620674 has 4 divisors (see below), whose sum is σ = 20431014. Its totient is φ = 6810336.

The previous prime is 13620671. The next prime is 13620679. The reversal of 13620674 is 47602631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47602631 = 61 ⋅780371.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 1545049 = 3475^2 + 1243^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13620671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405167 + ... + 3405170.

Almost surely, 2^13620674 is an apocalyptic number.

13620674 is a deficient number, since it is larger than the sum of its proper divisors (6810340).

13620674 is an equidigital number, since it uses as much as digits as its factorization.

13620674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6810339.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13620674 is about 3690.6197311563. The cubic root of 13620674 is about 238.8175284802.

The spelling of 13620674 in words is "thirteen million, six hundred twenty thousand, six hundred seventy-four".