14445661 has 4 divisors (see below), whose sum is σ = 14578300. Its totient is φ = 14313024.

The previous prime is 14445649. The next prime is 14445671. The reversal of 14445661 is 16654441.

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 7784100 + 6661561 = 2790^2 + 2581^2 .

It is a cyclic number.

It is not a de Polignac number, because 14445661 - 2¹⁷ = 14314589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14445601) 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, 66156 + ... + 66373.

It is an arithmetic number, because the mean of its divisors is an integer number (3644575).

Almost surely, 2^14445661 is an apocalyptic number.

It is an amenable number.

14445661 is a deficient number, since it is larger than the sum of its proper divisors (132639).

14445661 is a wasteful number, since it uses less digits than its factorization.

14445661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132638.

The product of its digits is 11520, while the sum is 31.

The square root of 14445661 is about 3800.7447954315. The cubic root of 14445661 is about 243.5449561201.

The spelling of 14445661 in words is "fourteen million, four hundred forty-five thousand, six hundred sixty-one".