64184340 has 96 divisors (see below), whose sum is σ = 198696960. Its totient is φ = 15350400.

The previous prime is 64184327. The next prime is 64184357. The reversal of 64184340 is 4348146.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64184298 and 64184307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51525 + ... + 52755.

It is an arithmetic number, because the mean of its divisors is an integer number (2069760).

Almost surely, 2^64184340 is an apocalyptic number.

64184340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64184340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99348480).

64184340 is an abundant number, since it is smaller than the sum of its proper divisors (134512620).

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

64184340 is a wasteful number, since it uses less digits than its factorization.

64184340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 64184340 is about 8011.5129657263. The cubic root of 64184340 is about 400.3836735355.

The spelling of 64184340 in words is "sixty-four million, one hundred eighty-four thousand, three hundred forty".