16564041 has 32 divisors (see below), whose sum is σ = 27095040. Its totient is φ = 9936000.

The previous prime is 16564039. The next prime is 16564043. The reversal of 16564041 is 14046561.

16564041 is a `hidden beast` number, since 1 + 656 + 4 + 0 + 4 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (16564039) and next prime (16564043).

It is not a de Polignac number, because 16564041 - 2¹ = 16564039 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 16563996 and 16564014.

It is not an unprimeable number, because it can be changed into a prime (16564043) 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, 13816 + ... + 14966.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^16564041 is an apocalyptic number.

It is an amenable number.

16564041 is a deficient number, since it is larger than the sum of its proper divisors (10530999).

16564041 is a wasteful number, since it uses less digits than its factorization.

16564041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16564041 is about 4069.8944703764. The cubic root of 16564041 is about 254.9111108867.

The spelling of 16564041 in words is "sixteen million, five hundred sixty-four thousand, forty-one".