64683678 has 16 divisors (see below), whose sum is σ = 130046976. Its totient is φ = 21447960.

The previous prime is 64683673. The next prime is 64683679. The reversal of 64683678 is 87638646.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64683673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27076 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (8127936).

Almost surely, 2^64683678 is an apocalyptic number.

64683678 is an abundant number, since it is smaller than the sum of its proper divisors (65363298).

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

64683678 is a wasteful number, since it uses less digits than its factorization.

64683678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56639.

The product of its digits is 1161216, while the sum is 48.

The square root of 64683678 is about 8042.6163653378. The cubic root of 64683678 is about 401.4192872696.

The spelling of 64683678 in words is "sixty-four million, six hundred eighty-three thousand, six hundred seventy-eight".