16640682 has 8 divisors (see below), whose sum is σ = 33281376. Its totient is φ = 5546892.

The previous prime is 16640681. The next prime is 16640731. The reversal of 16640682 is 28604661.

It is a happy number.

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

16640682 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (16640681) 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, 1386718 + ... + 1386729.

It is an arithmetic number, because the mean of its divisors is an integer number (4160172).

Almost surely, 2^16640682 is an apocalyptic number.

16640682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16640682 is a wasteful number, since it uses less digits than its factorization.

16640682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773452.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 16640682 is about 4079.2992045203. The cubic root of 16640682 is about 255.3036597817.

The spelling of 16640682 in words is "sixteen million, six hundred forty thousand, six hundred eighty-two".