64473433 has 4 divisors (see below), whose sum is σ = 64944180. Its totient is φ = 64002688.

The previous prime is 64473419. The next prime is 64473457. The reversal of 64473433 is 33437446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 27846729 = 6052^2 + 5277^2 .

It is a cyclic number.

It is not a de Polignac number, because 64473433 - 2²⁵ = 30919001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64473133) 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, 235168 + ... + 235441.

It is an arithmetic number, because the mean of its divisors is an integer number (16236045).

Almost surely, 2^64473433 is an apocalyptic number.

It is an amenable number.

64473433 is a deficient number, since it is larger than the sum of its proper divisors (470747).

64473433 is a wasteful number, since it uses less digits than its factorization.

64473433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470746.

The product of its digits is 72576, while the sum is 34.

The square root of 64473433 is about 8029.5350425787. The cubic root of 64473433 is about 400.9838966342.

The spelling of 64473433 in words is "sixty-four million, four hundred seventy-three thousand, four hundred thirty-three".