66707 has 4 divisors (see below), whose sum is σ = 68376. Its totient is φ = 65040.

The previous prime is 66701. The next prime is 66713. The reversal of 66707 is 70766.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66701) and next prime (66713).

It is a cyclic number.

It is not a de Polignac number, because 66707 - 2⁶ = 66643 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (66701) 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, 773 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (17094).

2⁶⁶⁷⁰⁷ is an apocalyptic number.

66707 is a deficient number, since it is larger than the sum of its proper divisors (1669).

66707 is a wasteful number, since it uses less digits than its factorization.

66707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 66707 is about 258.2769831015. The cubic root of 66707 is about 40.5561888380.

The spelling of 66707 in words is "sixty-six thousand, seven hundred seven".