64836789 has 8 divisors (see below), whose sum is σ = 86686080. Its totient is φ = 43106016.

The previous prime is 64836773. The next prime is 64836791. The reversal of 64836789 is 98763846.

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

It is not a de Polignac number, because 64836789 - 2⁴ = 64836773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64836719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28344 + ... + 30545.

It is an arithmetic number, because the mean of its divisors is an integer number (10835760).

Almost surely, 2^64836789 is an apocalyptic number.

It is an amenable number.

64836789 is a deficient number, since it is larger than the sum of its proper divisors (21849291).

64836789 is a wasteful number, since it uses less digits than its factorization.

64836789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59259.

The product of its digits is 1741824, while the sum is 51.

The square root of 64836789 is about 8052.1294698980. The cubic root of 64836789 is about 401.7357673012.

The spelling of 64836789 in words is "sixty-four million, eight hundred thirty-six thousand, seven hundred eighty-nine".