47664361 has 4 divisors (see below), whose sum is σ = 47827332. Its totient is φ = 47501392.

The previous prime is 47664343. The next prime is 47664367. The reversal of 47664361 is 16346674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36675136 + 10989225 = 6056^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 47664361 - 2⁷ = 47664233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47664361.

It is not an unprimeable number, because it can be changed into a prime (47664367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81046 + ... + 81631.

It is an arithmetic number, because the mean of its divisors is an integer number (11956833).

Almost surely, 2^47664361 is an apocalyptic number.

It is an amenable number.

47664361 is a deficient number, since it is larger than the sum of its proper divisors (162971).

47664361 is a wasteful number, since it uses less digits than its factorization.

47664361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162970.

The product of its digits is 72576, while the sum is 37.

The square root of 47664361 is about 6903.9380790966. The cubic root of 47664361 is about 362.5750579416.

The spelling of 47664361 in words is "forty-seven million, six hundred sixty-four thousand, three hundred sixty-one".