16640712 has 48 divisors (see below), whose sum is σ = 49168080. Its totient is φ = 5042400.

The previous prime is 16640681. The next prime is 16640731. The reversal of 16640712 is 21704661.

16640712 is a `hidden beast` number, since 1 + 6 + 640 + 7 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9714 + ... + 11297.

It is an arithmetic number, because the mean of its divisors is an integer number (1024335).

Almost surely, 2^16640712 is an apocalyptic number.

16640712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16640712 is an abundant number, since it is smaller than the sum of its proper divisors (32527368).

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

16640712 is a wasteful number, since it uses less digits than its factorization.

16640712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21034 (or 21027 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 16640712 is about 4079.3028816208. The cubic root of 16640712 is about 255.3038132030.

The spelling of 16640712 in words is "sixteen million, six hundred forty thousand, seven hundred twelve".