16662051 has 32 divisors (see below), whose sum is σ = 29445120. Its totient is φ = 9104832.

The previous prime is 16662049. The next prime is 16662073. The reversal of 16662051 is 15026661.

It is a happy number.

It is not a de Polignac number, because 16662051 - 2¹ = 16662049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16662011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2431 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (920160).

Almost surely, 2^16662051 is an apocalyptic number.

16662051 is a deficient number, since it is larger than the sum of its proper divisors (12783069).

16662051 is a wasteful number, since it uses less digits than its factorization.

16662051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872 (or 3866 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 16662051 is about 4081.9175640868. The cubic root of 16662051 is about 255.4128950947.

The spelling of 16662051 in words is "sixteen million, six hundred sixty-two thousand, fifty-one".