66346039 has 2 divisors, whose sum is σ = 66346040. Its totient is φ = 66346038.

The previous prime is 66346009. The next prime is 66346057. The reversal of 66346039 is 93064366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66346039 - 2⁷ = 66345911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66345989 and 66346007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66346009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33173019 + 33173020.

It is an arithmetic number, because the mean of its divisors is an integer number (33173020).

Almost surely, 2^66346039 is an apocalyptic number.

66346039 is a deficient number, since it is larger than the sum of its proper divisors (1).

66346039 is an equidigital number, since it uses as much as digits as its factorization.

66346039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 66346039 is about 8145.3077903785. The cubic root of 66346039 is about 404.8290473950.

The spelling of 66346039 in words is "sixty-six million, three hundred forty-six thousand, thirty-nine".