667746113 has 4 divisors (see below), whose sum is σ = 667867440. Its totient is φ = 667624788.

The previous prime is 667746109. The next prime is 667746181. The reversal of 667746113 is 311647766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667746113 - 2² = 667746109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667716113) 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, 51995 + ... + 63552.

It is an arithmetic number, because the mean of its divisors is an integer number (166966860).

Almost surely, 2^667746113 is an apocalyptic number.

It is an amenable number.

667746113 is a deficient number, since it is larger than the sum of its proper divisors (121327).

667746113 is a wasteful number, since it uses less digits than its factorization.

667746113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121326.

The product of its digits is 127008, while the sum is 41.

The square root of 667746113 is about 25840.7839083879. The cubic root of 667746113 is about 874.0517021048.

The spelling of 667746113 in words is "six hundred sixty-seven million, seven hundred forty-six thousand, one hundred thirteen".