6464731623 has 16 divisors (see below), whose sum is σ = 9868350720. Its totient is φ = 3687633216.

The previous prime is 6464731583. The next prime is 6464731681. The reversal of 6464731623 is 3261374646.

It is not a de Polignac number, because 6464731623 - 2¹⁰ = 6464730599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464732623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258565 + ... + 282462.

It is an arithmetic number, because the mean of its divisors is an integer number (616771920).

Almost surely, 2^6464731623 is an apocalyptic number.

6464731623 is a deficient number, since it is larger than the sum of its proper divisors (3403619097).

6464731623 is a wasteful number, since it uses less digits than its factorization.

6464731623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541606.

The product of its digits is 435456, while the sum is 42.

The square root of 6464731623 is about 80403.5547908176. The cubic root of 6464731623 is about 1862.8740804881.

The spelling of 6464731623 in words is "six billion, four hundred sixty-four million, seven hundred thirty-one thousand, six hundred twenty-three".