66342005 has 16 divisors (see below), whose sum is σ = 83341440. Its totient is φ = 50601408.

The previous prime is 66341971. The next prime is 66342037. The reversal of 66342005 is 50024366.

It is a cyclic number.

It is not a de Polignac number, because 66342005 - 2²⁰ = 65293429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43994 + ... + 45476.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^66342005 is an apocalyptic number.

It is an amenable number.

66342005 is a deficient number, since it is larger than the sum of its proper divisors (16999435).

66342005 is a wasteful number, since it uses less digits than its factorization.

66342005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66342005 is about 8145.0601593850. The cubic root of 66342005 is about 404.8208423662.

The spelling of 66342005 in words is "sixty-six million, three hundred forty-two thousand, five".