13621354 has 4 divisors (see below), whose sum is σ = 20432034. Its totient is φ = 6810676.

The previous prime is 13621343. The next prime is 13621357. The reversal of 13621354 is 45312631.

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., 12852225 + 769129 = 3585^2 + 877^2 .

It is not an unprimeable number, because it can be changed into a prime (13621357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405337 + ... + 3405340.

Almost surely, 2^13621354 is an apocalyptic number.

13621354 is a deficient number, since it is larger than the sum of its proper divisors (6810680).

13621354 is an equidigital number, since it uses as much as digits as its factorization.

13621354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6810679.

The product of its digits is 2160, while the sum is 25.

The square root of 13621354 is about 3690.7118554555. The cubic root of 13621354 is about 238.8215026647.

Adding to 13621354 its reverse (45312631), we get a palindrome (58933985).

The spelling of 13621354 in words is "thirteen million, six hundred twenty-one thousand, three hundred fifty-four".