66379416 has 64 divisors (see below), whose sum is σ = 171763200. Its totient is φ = 21364608.

The previous prime is 66379393. The next prime is 66379421. The reversal of 66379416 is 61497366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93270 + ... + 93978.

It is an arithmetic number, because the mean of its divisors is an integer number (2683800).

Almost surely, 2^66379416 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 66379416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85881600).

66379416 is an abundant number, since it is smaller than the sum of its proper divisors (105383784).

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

66379416 is a wasteful number, since it uses less digits than its factorization.

66379416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 844 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 66379416 is about 8147.3563810601. The cubic root of 66379416 is about 404.8969224036.

It can be divided in two parts, 66379 and 416, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 66379416 in words is "sixty-six million, three hundred seventy-nine thousand, four hundred sixteen".