14640891 has 8 divisors (see below), whose sum is σ = 19539264. Its totient is φ = 9751560.

The previous prime is 14640883. The next prime is 14640929. The reversal of 14640891 is 19804641.

14640891 is nontrivially palindromic in base 2.

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

It is not a de Polignac number, because 14640891 - 2³ = 14640883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14640841) 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, 3996 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (2442408).

Almost surely, 2^14640891 is an apocalyptic number.

14640891 is a deficient number, since it is larger than the sum of its proper divisors (4898373).

14640891 is a wasteful number, since it uses less digits than its factorization.

14640891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 14640891 is about 3826.3417254605. The cubic root of 14640891 is about 244.6372028641.

The spelling of 14640891 in words is "fourteen million, six hundred forty thousand, eight hundred ninety-one".