864478723 has 2 divisors, whose sum is σ = 864478724. Its totient is φ = 864478722.

The previous prime is 864478721. The next prime is 864478753. The reversal of 864478723 is 327874468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864478723 - 2¹ = 864478721 is a prime.

Together with 864478721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (864478721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432239361 + 432239362.

It is an arithmetic number, because the mean of its divisors is an integer number (432239362).

Almost surely, 2^864478723 is an apocalyptic number.

864478723 is a deficient number, since it is larger than the sum of its proper divisors (1).

864478723 is an equidigital number, since it uses as much as digits as its factorization.

864478723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 49.

The square root of 864478723 is about 29402.0190293116. The cubic root of 864478723 is about 952.6165073579.

The spelling of 864478723 in words is "eight hundred sixty-four million, four hundred seventy-eight thousand, seven hundred twenty-three".