66836079 has 6 divisors (see below), whose sum is σ = 96541016. Its totient is φ = 44557380.

The previous prime is 66836071. The next prime is 66836089. The reversal of 66836079 is 97063866.

It is not a de Polignac number, because 66836079 - 2³ = 66836071 is a prime.

It is a super-2 number, since 2×66836079² = 8934122912188482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66836071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3713107 + ... + 3713124.

Almost surely, 2^66836079 is an apocalyptic number.

66836079 is a deficient number, since it is larger than the sum of its proper divisors (29704937).

66836079 is a wasteful number, since it uses less digits than its factorization.

66836079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426237 (or 7426234 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 66836079 is about 8175.3335711762. Note that the first 3 decimals coincide. The cubic root of 66836079 is about 405.8233091881.

The spelling of 66836079 in words is "sixty-six million, eight hundred thirty-six thousand, seventy-nine".