66096139 has 2 divisors, whose sum is σ = 66096140. Its totient is φ = 66096138.

The previous prime is 66096077. The next prime is 66096161. The reversal of 66096139 is 93169066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66096139 is a prime.

It is not a weakly prime, because it can be changed into another prime (66096169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33048069 + 33048070.

It is an arithmetic number, because the mean of its divisors is an integer number (33048070).

Almost surely, 2^66096139 is an apocalyptic number.

66096139 is a deficient number, since it is larger than the sum of its proper divisors (1).

66096139 is an equidigital number, since it uses as much as digits as its factorization.

66096139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 66096139 is about 8129.9531978973. The cubic root of 66096139 is about 404.3201294766.

The spelling of 66096139 in words is "sixty-six million, ninety-six thousand, one hundred thirty-nine".