16211664 has 100 divisors (see below), whose sum is σ = 53654304. Its totient is φ = 4629312.

The previous prime is 16211653. The next prime is 16211683. The reversal of 16211664 is 46611261.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8179 + ... + 9965.

Almost surely, 2^16211664 is an apocalyptic number.

16211664 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 16211664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26827152).

16211664 is an abundant number, since it is smaller than the sum of its proper divisors (37442640).

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

16211664 is a wasteful number, since it uses less digits than its factorization.

16211664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1799 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 16211664 is about 4026.3710708279. The cubic root of 16211664 is about 253.0905121737.

It can be divided in two parts, 162 and 11664, that multiplied together give a 5-th power (1889568 = 18⁵).

The spelling of 16211664 in words is "sixteen million, two hundred eleven thousand, six hundred sixty-four".