16045643 has 8 divisors (see below), whose sum is σ = 16414608. Its totient is φ = 15681024.

The previous prime is 16045621. The next prime is 16045663. The reversal of 16045643 is 34654061.

It is a happy number.

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

It is not a de Polignac number, because 16045643 - 2⁸ = 16045387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16045663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7055 + ... + 9047.

It is an arithmetic number, because the mean of its divisors is an integer number (2051826).

Almost surely, 2^16045643 is an apocalyptic number.

16045643 is a deficient number, since it is larger than the sum of its proper divisors (368965).

16045643 is an equidigital number, since it uses as much as digits as its factorization.

16045643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 16045643 is about 4005.7013118804. The cubic root of 16045643 is about 252.2235932299.

The spelling of 16045643 in words is "sixteen million, forty-five thousand, six hundred forty-three".