16640706 has 16 divisors (see below), whose sum is σ = 33433344. Its totient is φ = 5521584.

The previous prime is 16640681. The next prime is 16640731. The reversal of 16640706 is 60704661.

It is an interprime number because it is at equal distance from previous prime (16640681) and next prime (16640731).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4881 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (2089584).

Almost surely, 2^16640706 is an apocalyptic number.

16640706 is an abundant number, since it is smaller than the sum of its proper divisors (16792638).

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

16640706 is a wasteful number, since it uses less digits than its factorization.

16640706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12665.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 16640706 is about 4079.3021462010. The cubic root of 16640706 is about 255.3037825187.

The spelling of 16640706 in words is "sixteen million, six hundred forty thousand, seven hundred six".