667070711 has 4 divisors (see below), whose sum is σ = 668655624. Its totient is φ = 665485800.

The previous prime is 667070659. The next prime is 667070713. The reversal of 667070711 is 117070766.

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 667070711 - 2⁶ = 667070647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667070713) 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, 791825 + ... + 792666.

It is an arithmetic number, because the mean of its divisors is an integer number (167163906).

Almost surely, 2^667070711 is an apocalyptic number.

667070711 is a deficient number, since it is larger than the sum of its proper divisors (1584913).

667070711 is a wasteful number, since it uses less digits than its factorization.

667070711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584912.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 667070711 is about 25827.7120744366. The cubic root of 667070711 is about 873.7569117131.

Subtracting from 667070711 its reverse (117070766), we obtain a palindrome (549999945).

The spelling of 667070711 in words is "six hundred sixty-seven million, seventy thousand, seven hundred eleven".