66995376 has 80 divisors (see below), whose sum is σ = 202439424. Its totient is φ = 18692352.

The previous prime is 66995363. The next prime is 66995407. The reversal of 66995376 is 67359966.

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, 12130 + ... + 16766.

Almost surely, 2^66995376 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 66995376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101219712).

66995376 is an abundant number, since it is smaller than the sum of its proper divisors (135444048).

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

66995376 is a wasteful number, since it uses less digits than its factorization.

66995376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4692 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 51.

The square root of 66995376 is about 8185.0703112435. The cubic root of 66995376 is about 406.1454662483.

The spelling of 66995376 in words is "sixty-six million, nine hundred ninety-five thousand, three hundred seventy-six".