16810664 has 16 divisors (see below), whose sum is σ = 33944820. Its totient is φ = 7758720.

The previous prime is 16810657. The next prime is 16810667. The reversal of 16810664 is 46601861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15665764 + 1144900 = 3958^2 + 1070^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16810664.

It is not an unprimeable number, because it can be changed into a prime (16810667) 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, 80717 + ... + 80924.

Almost surely, 2^16810664 is an apocalyptic number.

It is an amenable number.

16810664 is an abundant number, since it is smaller than the sum of its proper divisors (17134156).

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

16810664 is a wasteful number, since it uses less digits than its factorization.

16810664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161660 (or 161656 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16810664 is about 4100.0809748101. The cubic root of 16810664 is about 256.1700123934.

The spelling of 16810664 in words is "sixteen million, eight hundred ten thousand, six hundred sixty-four".