667070007 has 4 divisors (see below), whose sum is σ = 889426680. Its totient is φ = 444713336.

The previous prime is 667069981. The next prime is 667070029. The reversal of 667070007 is 700070766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 667070007 - 2¹⁸ = 666807863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667070007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667077007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111178332 + ... + 111178337.

It is an arithmetic number, because the mean of its divisors is an integer number (222356670).

Almost surely, 2^667070007 is an apocalyptic number.

667070007 is a deficient number, since it is larger than the sum of its proper divisors (222356673).

667070007 is a wasteful number, since it uses less digits than its factorization.

667070007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222356672.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 667070007 is about 25827.6984456610. The cubic root of 667070007 is about 873.7566043369.

The spelling of 667070007 in words is "six hundred sixty-seven million, seventy thousand, seven".