65670384 has 160 divisors (see below), whose sum is σ = 199987200. Its totient is φ = 18385920.

The previous prime is 65670379. The next prime is 65670389. The reversal of 65670384 is 48307656.

65670384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65670379) and next prime (65670389).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65670389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343729 + ... + 343919.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^65670384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65670384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99993600).

65670384 is an abundant number, since it is smaller than the sum of its proper divisors (134316816).

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

65670384 is a wasteful number, since it uses less digits than its factorization.

65670384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 65670384 is about 8103.7265501743. The cubic root of 65670384 is about 403.4501227410.

The spelling of 65670384 in words is "sixty-five million, six hundred seventy thousand, three hundred eighty-four".