667340007 has 8 divisors (see below), whose sum is σ = 918489600. Its totient is φ = 430541880.

The previous prime is 667339999. The next prime is 667340017. The reversal of 667340007 is 700043766.

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

It is not a de Polignac number, because 667340007 - 2³ = 667339999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667340007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667340017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3587757 + ... + 3587942.

It is an arithmetic number, because the mean of its divisors is an integer number (114811200).

Almost surely, 2^667340007 is an apocalyptic number.

667340007 is a deficient number, since it is larger than the sum of its proper divisors (251149593).

667340007 is a wasteful number, since it uses less digits than its factorization.

667340007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175733.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 667340007 is about 25832.9248634374. The cubic root of 667340007 is about 873.8744742549.

The spelling of 667340007 in words is "six hundred sixty-seven million, three hundred forty thousand, seven".