14640665 has 8 divisors (see below), whose sum is σ = 18920328. Its totient is φ = 10811520.

The previous prime is 14640653. The next prime is 14640677. The reversal of 14640665 is 56604641.

It is an interprime number because it is at equal distance from previous prime (14640653) and next prime (14640677).

It can be written as a sum of positive squares in 4 ways, for example, as 17689 + 14622976 = 133^2 + 3824^2 .

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

It is not a de Polignac number, because 14640665 - 2⁶ = 14640601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112556 + ... + 112685.

It is an arithmetic number, because the mean of its divisors is an integer number (2365041).

Almost surely, 2^14640665 is an apocalyptic number.

It is an amenable number.

14640665 is a deficient number, since it is larger than the sum of its proper divisors (4279663).

14640665 is a wasteful number, since it uses less digits than its factorization.

14640665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225259.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 14640665 is about 3826.3121932221. The cubic root of 14640665 is about 244.6359440998.

The spelling of 14640665 in words is "fourteen million, six hundred forty thousand, six hundred sixty-five".