13620451 has 8 divisors (see below), whose sum is σ = 15531264. Its totient is φ = 11832960.

The previous prime is 13620421. The next prime is 13620457. The reversal of 13620451 is 15402631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13620451 - 2¹⁵ = 13587683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13620457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30595 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (1941408).

Almost surely, 2^13620451 is an apocalyptic number.

13620451 is a deficient number, since it is larger than the sum of its proper divisors (1910813).

13620451 is a wasteful number, since it uses less digits than its factorization.

13620451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61661.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13620451 is about 3690.5895193045. The cubic root of 13620451 is about 238.8162251526.

The spelling of 13620451 in words is "thirteen million, six hundred twenty thousand, four hundred fifty-one".