16649712 has 100 divisors (see below), whose sum is σ = 49963320. Its totient is φ = 5346432.

The previous prime is 16649687. The next prime is 16649753. The reversal of 16649712 is 21794661.

16649712 is a `hidden beast` number, since 1 + 6 + 649 + 7 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37363 + ... + 37805.

Almost surely, 2^16649712 is an apocalyptic number.

16649712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16649712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24981660).

16649712 is an abundant number, since it is smaller than the sum of its proper divisors (33313608).

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

16649712 is a wasteful number, since it uses less digits than its factorization.

16649712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 477 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 16649712 is about 4080.4058621662. The cubic root of 16649712 is about 255.3498312701.

The spelling of 16649712 in words is "sixteen million, six hundred forty-nine thousand, seven hundred twelve".