16664364 has 18 divisors (see below), whose sum is σ = 42123900. Its totient is φ = 5554776.

The previous prime is 16664353. The next prime is 16664377. The reversal of 16664364 is 46346661.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 462899 = 16664364 / (1 + 6 + 6 + 6 + 4 + 3 + 6 + 4).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231414 + ... + 231485.

Almost surely, 2^16664364 is an apocalyptic number.

It is an amenable number.

16664364 is an abundant number, since it is smaller than the sum of its proper divisors (25459536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16664364 is a wasteful number, since it uses less digits than its factorization.

16664364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462909 (or 462904 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 16664364 is about 4082.2008769780. The cubic root of 16664364 is about 255.4247132215.

The spelling of 16664364 in words is "sixteen million, six hundred sixty-four thousand, three hundred sixty-four".