47646081 has 18 divisors (see below), whose sum is σ = 80059122. Its totient is φ = 27226080.

The previous prime is 47646031. The next prime is 47646089. The reversal of 47646081 is 18064674.

47646081 is a `hidden beast` number, since 4 + 7 + 646 + 0 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 6890625 = 6384^2 + 2625^2 .

It is not a de Polignac number, because 47646081 - 2²¹ = 45548929 is a prime.

It is a super-2 number, since 2×47646081² = 4540298069317122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47646089) 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 17 ways as a sum of consecutive naturals, for example, 53580 + ... + 54461.

It is an arithmetic number, because the mean of its divisors is an integer number (4447729).

Almost surely, 2^47646081 is an apocalyptic number.

It is an amenable number.

47646081 is a deficient number, since it is larger than the sum of its proper divisors (32413041).

47646081 is a wasteful number, since it uses less digits than its factorization.

47646081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108061 (or 108051 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 47646081 is about 6902.6140700462. The cubic root of 47646081 is about 362.5287010173.

The spelling of 47646081 in words is "forty-seven million, six hundred forty-six thousand, eighty-one".