66061379 has 2 divisors, whose sum is σ = 66061380. Its totient is φ = 66061378.

The previous prime is 66061363. The next prime is 66061381. The reversal of 66061379 is 97316066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66061379 - 2⁴ = 66061363 is a prime.

Together with 66061381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66061339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33030689 + 33030690.

It is an arithmetic number, because the mean of its divisors is an integer number (33030690).

Almost surely, 2^66061379 is an apocalyptic number.

66061379 is a deficient number, since it is larger than the sum of its proper divisors (1).

66061379 is an equidigital number, since it uses as much as digits as its factorization.

66061379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 66061379 is about 8127.8151430750. The cubic root of 66061379 is about 404.2492396468.

The spelling of 66061379 in words is "sixty-six million, sixty-one thousand, three hundred seventy-nine".