14720645 has 4 divisors (see below), whose sum is σ = 17664780. Its totient is φ = 11776512.

The previous prime is 14720639. The next prime is 14720647. The reversal of 14720645 is 54602741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4268356 + 10452289 = 2066^2 + 3233^2 .

It is a cyclic number.

It is not a de Polignac number, because 14720645 - 2⁸ = 14720389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14720647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472060 + ... + 1472069.

It is an arithmetic number, because the mean of its divisors is an integer number (4416195).

Almost surely, 2^14720645 is an apocalyptic number.

It is an amenable number.

14720645 is a deficient number, since it is larger than the sum of its proper divisors (2944135).

14720645 is an equidigital number, since it uses as much as digits as its factorization.

14720645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944134.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 14720645 is about 3836.7492751026. The cubic root of 14720645 is about 245.0806065466.

The spelling of 14720645 in words is "fourteen million, seven hundred twenty thousand, six hundred forty-five".