64478803 has 4 divisors (see below), whose sum is σ = 66702240. Its totient is φ = 62255368.

The previous prime is 64478779. The next prime is 64478833. The reversal of 64478803 is 30887446.

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

It is a cyclic number.

It is not a de Polignac number, because 64478803 - 2⁹ = 64478291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64478833) 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, 1111675 + ... + 1111732.

It is an arithmetic number, because the mean of its divisors is an integer number (16675560).

Almost surely, 2^64478803 is an apocalyptic number.

64478803 is a deficient number, since it is larger than the sum of its proper divisors (2223437).

64478803 is a wasteful number, since it uses less digits than its factorization.

64478803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223436.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 64478803 is about 8029.8694260866. The cubic root of 64478803 is about 400.9950289908.

The spelling of 64478803 in words is "sixty-four million, four hundred seventy-eight thousand, eight hundred three".