66424134 has 64 divisors (see below), whose sum is σ = 165998592. Its totient is φ = 17280000.

The previous prime is 66424129. The next prime is 66424177. The reversal of 66424134 is 43142466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20634 + ... + 23634.

It is an arithmetic number, because the mean of its divisors is an integer number (2593728).

Almost surely, 2^66424134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66424134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82999296).

66424134 is an abundant number, since it is smaller than the sum of its proper divisors (99574458).

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

66424134 is a wasteful number, since it uses less digits than its factorization.

66424134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its digits is 13824, while the sum is 30.

The square root of 66424134 is about 8150.1002447823. The cubic root of 66424134 is about 404.9878246607.

The spelling of 66424134 in words is "sixty-six million, four hundred twenty-four thousand, one hundred thirty-four".