16351664 has 40 divisors (see below), whose sum is σ = 36664320. Its totient is φ = 6919488.

The previous prime is 16351651. The next prime is 16351691. The reversal of 16351664 is 46615361.

It is a self number, because there is not a number n which added to its sum of digits gives 16351664.

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, 8417 + ... + 10175.

It is an arithmetic number, because the mean of its divisors is an integer number (916608).

Almost surely, 2^16351664 is an apocalyptic number.

16351664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16351664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18332160).

16351664 is an abundant number, since it is smaller than the sum of its proper divisors (20312656).

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

16351664 is a wasteful number, since it uses less digits than its factorization.

16351664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857 (or 1851 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 16351664 is about 4043.7190802527. The cubic root of 16351664 is about 253.8169677730.

The spelling of 16351664 in words is "sixteen million, three hundred fifty-one thousand, six hundred sixty-four".