13620994 has 4 divisors (see below), whose sum is σ = 20431494. Its totient is φ = 6810496.

The previous prime is 13620949. The next prime is 13621001. The reversal of 13620994 is 49902631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 5583769 = 2835^2 + 2363^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405247 + ... + 3405250.

Almost surely, 2^13620994 is an apocalyptic number.

13620994 is a deficient number, since it is larger than the sum of its proper divisors (6810500).

13620994 is an equidigital number, since it uses as much as digits as its factorization.

13620994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810499.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13620994 is about 3690.6630840541. The cubic root of 13620994 is about 238.8193987011.

The spelling of 13620994 in words is "thirteen million, six hundred twenty thousand, nine hundred ninety-four".