16001662 has 4 divisors (see below), whose sum is σ = 24002496. Its totient is φ = 8000830.

The previous prime is 16001659. The next prime is 16001663. The reversal of 16001662 is 26610061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26610061 = 109 ⋅244129.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000414 + ... + 4000417.

It is an arithmetic number, because the mean of its divisors is an integer number (6000624).

Almost surely, 2^16001662 is an apocalyptic number.

16001662 is a deficient number, since it is larger than the sum of its proper divisors (8000834).

16001662 is an equidigital number, since it uses as much as digits as its factorization.

16001662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000833.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 16001662 is about 4000.2077446053. The cubic root of 16001662 is about 251.9929346302.

The spelling of 16001662 in words is "sixteen million, one thousand, six hundred sixty-two".