13074721 has 8 divisors (see below), whose sum is σ = 14465088. Its totient is φ = 11718000.

The previous prime is 13074701. The next prime is 13074731. The reversal of 13074721 is 12747031.

It is a happy number.

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 13074721 - 2⁵ = 13074689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13074701) 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, 7590 + ... + 9151.

It is an arithmetic number, because the mean of its divisors is an integer number (1808136).

Almost surely, 2^13074721 is an apocalyptic number.

13074721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13074721 is a deficient number, since it is larger than the sum of its proper divisors (1390367).

13074721 is a wasteful number, since it uses less digits than its factorization.

13074721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16823.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 13074721 is about 3615.8983669346. The cubic root of 13074721 is about 235.5831060378.

The spelling of 13074721 in words is "thirteen million, seventy-four thousand, seven hundred twenty-one".