64472823 has 24 divisors (see below), whose sum is σ = 99813168. Its totient is φ = 39958272.

The previous prime is 64472803. The next prime is 64472831. The reversal of 64472823 is 32827446.

64472823 is a `hidden beast` number, since 644 + 7 + 2 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 64472823 - 2¹² = 64468727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64472803) 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 23 ways as a sum of consecutive naturals, for example, 10161 + ... + 15237.

It is an arithmetic number, because the mean of its divisors is an integer number (4158882).

Almost surely, 2^64472823 is an apocalyptic number.

64472823 is a deficient number, since it is larger than the sum of its proper divisors (35340345).

64472823 is a wasteful number, since it uses less digits than its factorization.

64472823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183 (or 5180 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64472823 is about 8029.4970577241. The cubic root of 64472823 is about 400.9826320258.

The spelling of 64472823 in words is "sixty-four million, four hundred seventy-two thousand, eight hundred twenty-three".