66347067 has 4 divisors (see below), whose sum is σ = 88462760. Its totient is φ = 44231376.

The previous prime is 66347027. The next prime is 66347089. The reversal of 66347067 is 76074366.

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

It is not a de Polignac number, because 66347067 - 2⁶ = 66347003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66347027) 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, 11057842 + ... + 11057847.

It is an arithmetic number, because the mean of its divisors is an integer number (22115690).

Almost surely, 2^66347067 is an apocalyptic number.

66347067 is a deficient number, since it is larger than the sum of its proper divisors (22115693).

66347067 is a wasteful number, since it uses less digits than its factorization.

66347067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22115692.

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 66347067 is about 8145.3708939495. The cubic root of 66347067 is about 404.8311382614.

The spelling of 66347067 in words is "sixty-six million, three hundred forty-seven thousand, sixty-seven".