16664045 has 8 divisors (see below), whose sum is σ = 21049440. Its totient is φ = 12629520.

The previous prime is 16664027. The next prime is 16664057. The reversal of 16664045 is 54046661.

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

It is not a de Polignac number, because 16664045 - 2²² = 12469741 is a prime.

It is a congruent 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, 87611 + ... + 87800.

It is an arithmetic number, because the mean of its divisors is an integer number (2631180).

Almost surely, 2^16664045 is an apocalyptic number.

It is an amenable number.

16664045 is a deficient number, since it is larger than the sum of its proper divisors (4385395).

16664045 is a wasteful number, since it uses less digits than its factorization.

16664045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175435.

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

The square root of 16664045 is about 4082.1618047304. The cubic root of 16664045 is about 255.4230833762.

The spelling of 16664045 in words is "sixteen million, six hundred sixty-four thousand, forty-five".