64385340 has 24 divisors (see below), whose sum is σ = 180279120. Its totient is φ = 17169408.

The previous prime is 64385329. The next prime is 64385369. The reversal of 64385340 is 4358346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536485 + ... + 536604.

It is an arithmetic number, because the mean of its divisors is an integer number (7511630).

Almost surely, 2^64385340 is an apocalyptic number.

64385340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64385340 is an abundant number, since it is smaller than the sum of its proper divisors (115893780).

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

64385340 is a wasteful number, since it uses less digits than its factorization.

64385340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073101 (or 1073099 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 64385340 is about 8024.0476070372. The cubic root of 64385340 is about 400.8011858483.

The spelling of 64385340 in words is "sixty-four million, three hundred eighty-five thousand, three hundred forty".