64372473 has 12 divisors (see below), whose sum is σ = 101435568. Its totient is φ = 39013560.

The previous prime is 64372463. The next prime is 64372487. The reversal of 64372473 is 37427346.

It is a happy number.

64372473 is a `hidden beast` number, since 643 + 7 + 2 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 64372473 - 2²¹ = 62275321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64372403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325015 + ... + 325212.

It is an arithmetic number, because the mean of its divisors is an integer number (8452964).

Almost surely, 2^64372473 is an apocalyptic number.

It is an amenable number.

64372473 is a deficient number, since it is larger than the sum of its proper divisors (37063095).

64372473 is a wasteful number, since it uses less digits than its factorization.

64372473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650244 (or 650241 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 64372473 is about 8023.2457895792. The cubic root of 64372473 is about 400.7744848818.

The spelling of 64372473 in words is "sixty-four million, three hundred seventy-two thousand, four hundred seventy-three".