66360667 has 4 divisors (see below), whose sum is σ = 66382416. Its totient is φ = 66338920.

The previous prime is 66360661. The next prime is 66360703. The reversal of 66360667 is 76606366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66360667 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66360661) 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, 5368 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (16595604).

Almost surely, 2^66360667 is an apocalyptic number.

66360667 is a deficient number, since it is larger than the sum of its proper divisors (21749).

66360667 is a wasteful number, since it uses less digits than its factorization.

66360667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21748.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 66360667 is about 8146.2056811745. The cubic root of 66360667 is about 404.8587974962.

The spelling of 66360667 in words is "sixty-six million, three hundred sixty thousand, six hundred sixty-seven".