14871621 has 4 divisors (see below), whose sum is σ = 19828832. Its totient is φ = 9914412.

The previous prime is 14871613. The next prime is 14871629. The reversal of 14871621 is 12617841.

14871621 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12617841 = 3 ⋅4205947.

It is an interprime number because it is at equal distance from previous prime (14871613) and next prime (14871629).

It is not a de Polignac number, because 14871621 - 2³ = 14871613 is a prime.

It is a super-2 number, since 2×14871621² = 442330222335282, which contains 22 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 (14871629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478601 + ... + 2478606.

It is an arithmetic number, because the mean of its divisors is an integer number (4957208).

Almost surely, 2^14871621 is an apocalyptic number.

It is an amenable number.

14871621 is a deficient number, since it is larger than the sum of its proper divisors (4957211).

14871621 is an equidigital number, since it uses as much as digits as its factorization.

14871621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957210.

The product of its digits is 2688, while the sum is 30.

The square root of 14871621 is about 3856.3740741790. The cubic root of 14871621 is about 245.9156131998.

The spelling of 14871621 in words is "fourteen million, eight hundred seventy-one thousand, six hundred twenty-one".