64433478 has 16 divisors (see below), whose sum is σ = 131299056. Its totient is φ = 21072480.

The previous prime is 64433477. The next prime is 64433483. The reversal of 64433478 is 87433446.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100993 + ... + 101628.

It is an arithmetic number, because the mean of its divisors is an integer number (8206191).

Almost surely, 2^64433478 is an apocalyptic number.

64433478 is an abundant number, since it is smaller than the sum of its proper divisors (66865578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64433478 is a wasteful number, since it uses less digits than its factorization.

64433478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202679.

The product of its digits is 193536, while the sum is 39.

The square root of 64433478 is about 8027.0466549037. The cubic root of 64433478 is about 400.9010479242.

The spelling of 64433478 in words is "sixty-four million, four hundred thirty-three thousand, four hundred seventy-eight".