64678 has 8 divisors (see below), whose sum is σ = 98568. Its totient is φ = 31824.

The previous prime is 64667. The next prime is 64679. The reversal of 64678 is 87646.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64679) 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, 76 + ... + 367.

It is an arithmetic number, because the mean of its divisors is an integer number (12321).

2⁶⁴⁶⁷⁸ is an apocalyptic number.

64678 is a deficient number, since it is larger than the sum of its proper divisors (33890).

64678 is a wasteful number, since it uses less digits than its factorization.

64678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

The product of its digits is 8064, while the sum is 31.

The square root of 64678 is about 254.3186977003. The cubic root of 64678 is about 40.1407541259.

The spelling of 64678 in words is "sixty-four thousand, six hundred seventy-eight".