66007 has 4 divisors (see below), whose sum is σ = 66600. Its totient is φ = 65416.

The previous prime is 65993. The next prime is 66029. The reversal of 66007 is 70066.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73 + ... + 370.

It is an arithmetic number, because the mean of its divisors is an integer number (16650).

2⁶⁶⁰⁰⁷ is an apocalyptic number.

66007 is a deficient number, since it is larger than the sum of its proper divisors (593).

66007 is a wasteful number, since it uses less digits than its factorization.

66007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 66007 is about 256.9182749436. The cubic root of 66007 is about 40.4138288769.

The spelling of 66007 in words is "sixty-six thousand, seven".