16662771 has 12 divisors (see below), whose sum is σ = 25484472. Its totient is φ = 10454976.

The previous prime is 16662743. The next prime is 16662773. The reversal of 16662771 is 17726661.

It is not a de Polignac number, because 16662771 - 2⁵ = 16662739 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16662773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54301 + ... + 54606.

It is an arithmetic number, because the mean of its divisors is an integer number (2123706).

Almost surely, 2^16662771 is an apocalyptic number.

16662771 is a deficient number, since it is larger than the sum of its proper divisors (8821701).

16662771 is a wasteful number, since it uses less digits than its factorization.

16662771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108930 (or 108927 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 16662771 is about 4082.0057569778. The cubic root of 16662771 is about 255.4165740063.

The spelling of 16662771 in words is "sixteen million, six hundred sixty-two thousand, seven hundred seventy-one".