14991307 has 4 divisors (see below), whose sum is σ = 15057576. Its totient is φ = 14925040.

The previous prime is 14991287. The next prime is 14991311. The reversal of 14991307 is 70319941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70319941 = 1733 ⋅40577.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14991307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14991367) 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, 32794 + ... + 33247.

It is an arithmetic number, because the mean of its divisors is an integer number (3764394).

Almost surely, 2^14991307 is an apocalyptic number.

14991307 is a deficient number, since it is larger than the sum of its proper divisors (66269).

14991307 is an equidigital number, since it uses as much as digits as its factorization.

14991307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66268.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 14991307 is about 3871.8609220890. The cubic root of 14991307 is about 246.5735564900.

The spelling of 14991307 in words is "fourteen million, nine hundred ninety-one thousand, three hundred seven".