14640019 has 4 divisors (see below), whose sum is σ = 14650344. Its totient is φ = 14629696.

The previous prime is 14639971. The next prime is 14640023. The reversal of 14640019 is 91004641.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 14640019 - 2⁹ = 14639507 is a prime.

It is a super-2 number, since 2×14640019² = 428660312640722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14639975 and 14640002.

It is not an unprimeable number, because it can be changed into a prime (14646019) 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, 2617 + ... + 6010.

It is an arithmetic number, because the mean of its divisors is an integer number (3662586).

Almost surely, 2^14640019 is an apocalyptic number.

14640019 is a deficient number, since it is larger than the sum of its proper divisors (10325).

14640019 is an equidigital number, since it uses as much as digits as its factorization.

14640019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 14640019 is about 3826.2277768058. The cubic root of 14640019 is about 244.6323459676.

The spelling of 14640019 in words is "fourteen million, six hundred forty thousand, nineteen".