13621471 has 8 divisors (see below), whose sum is σ = 14775264. Its totient is φ = 12506880.

The previous prime is 13621469. The next prime is 13621481. The reversal of 13621471 is 17412631.

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 13621471 - 2¹ = 13621469 is a prime.

It is a super-3 number, since 3×13621471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9075 + ... + 10468.

It is an arithmetic number, because the mean of its divisors is an integer number (1846908).

Almost surely, 2^13621471 is an apocalyptic number.

13621471 is a deficient number, since it is larger than the sum of its proper divisors (1153793).

13621471 is a wasteful number, since it uses less digits than its factorization.

13621471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19601.

The product of its digits is 1008, while the sum is 25.

The square root of 13621471 is about 3690.7277060222. The cubic root of 13621471 is about 238.8221864449.

The spelling of 13621471 in words is "thirteen million, six hundred twenty-one thousand, four hundred seventy-one".