16471861 has 16 divisors (see below), whose sum is σ = 20151936. Its totient is φ = 13142016.

The previous prime is 16471859. The next prime is 16471867. The reversal of 16471861 is 16817461.

It is a cyclic number.

It is not a de Polignac number, because 16471861 - 2¹ = 16471859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16471867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10830 + ... + 12256.

It is an arithmetic number, because the mean of its divisors is an integer number (1259496).

Almost surely, 2^16471861 is an apocalyptic number.

It is an amenable number.

16471861 is a deficient number, since it is larger than the sum of its proper divisors (3680075).

16471861 is a wasteful number, since it uses less digits than its factorization.

16471861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its digits is 8064, while the sum is 34.

The square root of 16471861 is about 4058.5540528617. The cubic root of 16471861 is about 254.4373651738.

The spelling of 16471861 in words is "sixteen million, four hundred seventy-one thousand, eight hundred sixty-one".