66541376 has 56 divisors (see below), whose sum is σ = 148742400. Its totient is φ = 29260800.

The previous prime is 66541357. The next prime is 66541379. The reversal of 66541376 is 67314566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66541379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20300 + ... + 23348.

Almost surely, 2^66541376 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 66541376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74371200).

66541376 is an abundant number, since it is smaller than the sum of its proper divisors (82201024).

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

66541376 is a wasteful number, since it uses less digits than its factorization.

66541376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3093 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 66541376 is about 8157.2897459879. The cubic root of 66541376 is about 405.2259593628.

The spelling of 66541376 in words is "sixty-six million, five hundred forty-one thousand, three hundred seventy-six".