16406001 has 12 divisors (see below), whose sum is σ = 23766912. Its totient is φ = 10905336.

The previous prime is 16405997. The next prime is 16406017. The reversal of 16406001 is 10060461.

16406001 is a `hidden beast` number, since 1 + 64 + 0 + 600 + 1 = 666.

It is not a de Polignac number, because 16406001 - 2² = 16405997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16406051) 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, 820 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (1980576).

Almost surely, 2^16406001 is an apocalyptic number.

It is an amenable number.

16406001 is a deficient number, since it is larger than the sum of its proper divisors (7360911).

16406001 is a wasteful number, since it uses less digits than its factorization.

16406001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340 (or 5337 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 16406001 is about 4050.4321991610. The cubic root of 16406001 is about 254.0978036978.

Adding to 16406001 its reverse (10060461), we get a palindrome (26466462).

The spelling of 16406001 in words is "sixteen million, four hundred six thousand, one".