16662057 has 8 divisors (see below), whose sum is σ = 23522976. Its totient is φ = 10454592.

The previous prime is 16662049. The next prime is 16662073. The reversal of 16662057 is 75026661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16662057 - 2³ = 16662049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16662007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163303 + ... + 163404.

It is an arithmetic number, because the mean of its divisors is an integer number (2940372).

Almost surely, 2^16662057 is an apocalyptic number.

16662057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16662057 is a deficient number, since it is larger than the sum of its proper divisors (6860919).

16662057 is a wasteful number, since it uses less digits than its factorization.

16662057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326727.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 16662057 is about 4081.9182990354. The cubic root of 16662057 is about 255.4129257528.

The spelling of 16662057 in words is "sixteen million, six hundred sixty-two thousand, fifty-seven".