16199664 has 60 divisors (see below), whose sum is σ = 45338616. Its totient is φ = 4982016.

The previous prime is 16199653. The next prime is 16199669. The reversal of 16199664 is 46699161.

It is a super-2 number, since 2×16199664² = 524858227425792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16199669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7114 + ... + 9110.

Almost surely, 2^16199664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16199664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22669308).

16199664 is an abundant number, since it is smaller than the sum of its proper divisors (29138952).

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

16199664 is a wasteful number, since it uses less digits than its factorization.

16199664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2015 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 16199664 is about 4024.8806193476. The cubic root of 16199664 is about 253.0280502366.

The spelling of 16199664 in words is "sixteen million, one hundred ninety-nine thousand, six hundred sixty-four".