667023690405 has 8 divisors (see below), whose sum is σ = 1067237904672. Its totient is φ = 355745968208.

The previous prime is 667023690283. The next prime is 667023690413. The reversal of 667023690405 is 504096320766.

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

It is a cyclic number.

It is not a de Polignac number, because 667023690405 - 2⁸ = 667023690149 is a prime.

It is a Curzon 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, 22234122999 + ... + 22234123028.

It is an arithmetic number, because the mean of its divisors is an integer number (133404738084).

Almost surely, 2^667023690405 is an apocalyptic number.

It is an amenable number.

667023690405 is a deficient number, since it is larger than the sum of its proper divisors (400214214267).

667023690405 is a wasteful number, since it uses less digits than its factorization.

667023690405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44468246035.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 667023690405 in words is "six hundred sixty-seven billion, twenty-three million, six hundred ninety thousand, four hundred five".