16275664 has 40 divisors (see below), whose sum is σ = 34049160. Its totient is φ = 7507968.

The previous prime is 16275643. The next prime is 16275691. The reversal of 16275664 is 46657261.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2585664 + 13690000 = 1608^2 + 3700^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13852 + ... + 14980.

It is an arithmetic number, because the mean of its divisors is an integer number (851229).

Almost surely, 2^16275664 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 16275664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17024580).

16275664 is an abundant number, since it is smaller than the sum of its proper divisors (17773496).

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

16275664 is a wasteful number, since it uses less digits than its factorization.

16275664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1201 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 16275664 is about 4034.3108457331. The cubic root of 16275664 is about 253.4231229887.

The spelling of 16275664 in words is "sixteen million, two hundred seventy-five thousand, six hundred sixty-four".