66340999 has 2 divisors, whose sum is σ = 66341000. Its totient is φ = 66340998.

The previous prime is 66340969. The next prime is 66341003. The reversal of 66340999 is 99904366.

66340999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66340999 is a prime.

It is a super-2 number, since 2×66340999² = 8802256296636002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66340949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33170499 + 33170500.

It is an arithmetic number, because the mean of its divisors is an integer number (33170500).

Almost surely, 2^66340999 is an apocalyptic number.

66340999 is a deficient number, since it is larger than the sum of its proper divisors (1).

66340999 is an equidigital number, since it uses as much as digits as its factorization.

66340999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 66340999 is about 8144.9984039286. The cubic root of 66340999 is about 404.8187961421.

The spelling of 66340999 in words is "sixty-six million, three hundred forty thousand, nine hundred ninety-nine".