667830005 has 8 divisors (see below), whose sum is σ = 801957024. Its totient is φ = 533890000.

The previous prime is 667829999. The next prime is 667830011. The reversal of 667830005 is 500038766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (667829999) and next prime (667830011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667830005 - 2⁸ = 667829749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38771 + ... + 53280.

It is an arithmetic number, because the mean of its divisors is an integer number (100244628).

Almost surely, 2^667830005 is an apocalyptic number.

It is an amenable number.

667830005 is a deficient number, since it is larger than the sum of its proper divisors (134127019).

667830005 is a wasteful number, since it uses less digits than its factorization.

667830005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93507.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 667830005 is about 25842.4071053762. The cubic root of 667830005 is about 874.0883042771.

The spelling of 667830005 in words is "six hundred sixty-seven million, eight hundred thirty thousand, five".