64859828 has 24 divisors (see below), whose sum is σ = 131108544. Its totient is φ = 27747200.

The previous prime is 64859801. The next prime is 64859833. The reversal of 64859828 is 82895846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42608 + ... + 44103.

It is an arithmetic number, because the mean of its divisors is an integer number (5462856).

Almost surely, 2^64859828 is an apocalyptic number.

64859828 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64859828 is an abundant number, since it is smaller than the sum of its proper divisors (66248716).

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

64859828 is a wasteful number, since it uses less digits than its factorization.

64859828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86743 (or 86741 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 64859828 is about 8053.5599581800. The cubic root of 64859828 is about 401.7833457126.

The spelling of 64859828 in words is "sixty-four million, eight hundred fifty-nine thousand, eight hundred twenty-eight".