16601330 has 8 divisors (see below), whose sum is σ = 29882412. Its totient is φ = 6640528.

The previous prime is 16601329. The next prime is 16601339. The reversal of 16601330 is 3310661.

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 2859481 = 3707^2 + 1691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16601339) 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, 830057 + ... + 830076.

Almost surely, 2^16601330 is an apocalyptic number.

16601330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16601330 is a deficient number, since it is larger than the sum of its proper divisors (13281082).

16601330 is a wasteful number, since it uses less digits than its factorization.

16601330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660140.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 16601330 is about 4074.4729720542. The cubic root of 16601330 is about 255.1022529814.

Adding to 16601330 its reverse (3310661), we get a palindrome (19911991).

The spelling of 16601330 in words is "sixteen million, six hundred one thousand, three hundred thirty".