64478 has 8 divisors (see below), whose sum is σ = 97968. Its totient is φ = 31824.

The previous prime is 64453. The next prime is 64483. The reversal of 64478 is 87446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 64478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50 + ... + 362.

It is an arithmetic number, because the mean of its divisors is an integer number (12246).

2⁶⁴⁴⁷⁸ is an apocalyptic number.

64478 is a deficient number, since it is larger than the sum of its proper divisors (33490).

64478 is a wasteful number, since it uses less digits than its factorization.

64478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its digits is 5376, while the sum is 29.

The square root of 64478 is about 253.9251858324. The cubic root of 64478 is about 40.0993364359.

The spelling of 64478 in words is "sixty-four thousand, four hundred seventy-eight".