16856477 has 16 divisors (see below), whose sum is σ = 19699200. Its totient is φ = 14261040.

The previous prime is 16856443. The next prime is 16856501. The reversal of 16856477 is 77465861.

It is a cyclic number.

It is not a de Polignac number, because 16856477 - 2¹⁴ = 16840093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11648 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^16856477 is an apocalyptic number.

It is an amenable number.

16856477 is a deficient number, since it is larger than the sum of its proper divisors (2842723).

16856477 is a wasteful number, since it uses less digits than its factorization.

16856477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its digits is 282240, while the sum is 44.

The square root of 16856477 is about 4105.6640145048. The cubic root of 16856477 is about 256.4025090961.

The spelling of 16856477 in words is "sixteen million, eight hundred fifty-six thousand, four hundred seventy-seven".