8546566401 has 6 divisors (see below), whose sum is σ = 12345040370. Its totient is φ = 5697710928.

The previous prime is 8546566367. The next prime is 8546566409. The reversal of 8546566401 is 1046656458.

8546566401 is a `hidden beast` number, since 8 + 5 + 46 + 566 + 40 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6759306225 + 1787260176 = 82215^2 + 42276^2 .

It is not a de Polignac number, because 8546566401 - 2⁶ = 8546566337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8546566409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 474809236 + ... + 474809253.

Almost surely, 2^8546566401 is an apocalyptic number.

It is an amenable number.

8546566401 is a deficient number, since it is larger than the sum of its proper divisors (3798473969).

8546566401 is a wasteful number, since it uses less digits than its factorization.

8546566401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949618495 (or 949618492 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 8546566401 is about 92447.6414031207. The cubic root of 8546566401 is about 2044.5475892188.

The spelling of 8546566401 in words is "eight billion, five hundred forty-six million, five hundred sixty-six thousand, four hundred one".