47664863 has 4 divisors (see below), whose sum is σ = 50173560. Its totient is φ = 45156168.

The previous prime is 47664853. The next prime is 47664871. The reversal of 47664863 is 36846674.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36846674 = 2 ⋅18423337.

It is a cyclic number.

It is not a de Polignac number, because 47664863 - 2⁴ = 47664847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47664803) 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, 1254320 + ... + 1254357.

It is an arithmetic number, because the mean of its divisors is an integer number (12543390).

Almost surely, 2^47664863 is an apocalyptic number.

47664863 is a deficient number, since it is larger than the sum of its proper divisors (2508697).

47664863 is a wasteful number, since it uses less digits than its factorization.

47664863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508696.

The product of its digits is 580608, while the sum is 44.

The square root of 47664863 is about 6903.9744350627. The cubic root of 47664863 is about 362.5763308147.

The spelling of 47664863 in words is "forty-seven million, six hundred sixty-four thousand, eight hundred sixty-three".