64385980 has 12 divisors (see below), whose sum is σ = 135210600. Its totient is φ = 25754384.

The previous prime is 64385969. The next prime is 64385983. The reversal of 64385980 is 8958346.

It is a super-3 number, since 3×64385980³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64385983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1609630 + ... + 1609669.

It is an arithmetic number, because the mean of its divisors is an integer number (11267550).

Almost surely, 2^64385980 is an apocalyptic number.

It is an amenable number.

64385980 is an abundant number, since it is smaller than the sum of its proper divisors (70824620).

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

64385980 is a wasteful number, since it uses less digits than its factorization.

64385980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219308 (or 3219306 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 64385980 is about 8024.0874870604. The cubic root of 64385980 is about 400.8025138520.

The spelling of 64385980 in words is "sixty-four million, three hundred eighty-five thousand, nine hundred eighty".