47664423 has 8 divisors (see below), whose sum is σ = 70614000. Its totient is φ = 31776264.

The previous prime is 47664377. The next prime is 47664433. The reversal of 47664423 is 32446674.

47664423 is a `hidden beast` number, since 4 + 7 + 6 + 644 + 2 + 3 = 666.

It is not a de Polignac number, because 47664423 - 2⁹ = 47663911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47664433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882648 + ... + 882701.

It is an arithmetic number, because the mean of its divisors is an integer number (8826750).

Almost surely, 2^47664423 is an apocalyptic number.

47664423 is a deficient number, since it is larger than the sum of its proper divisors (22949577).

47664423 is a wasteful number, since it uses less digits than its factorization.

47664423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765358 (or 1765352 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 47664423 is about 6903.9425692860. The cubic root of 47664423 is about 362.5752151496.

The spelling of 47664423 in words is "forty-seven million, six hundred sixty-four thousand, four hundred twenty-three".