667222211777 has 8 divisors (see below), whose sum is σ = 728542307232. Its totient is φ = 606012704800.

The previous prime is 667222211731. The next prime is 667222211779. The reversal of 667222211777 is 777112222766.

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 667222211777 - 2³² = 662927244481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667222211779) 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, 27634499 + ... + 27658632.

It is an arithmetic number, because the mean of its divisors is an integer number (91067788404).

Almost surely, 2^667222211777 is an apocalyptic number.

It is an amenable number.

667222211777 is a deficient number, since it is larger than the sum of its proper divisors (61320095455).

667222211777 is a wasteful number, since it uses less digits than its factorization.

667222211777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55294239.

The product of its digits is 1382976, while the sum is 50.

The spelling of 667222211777 in words is "six hundred sixty-seven billion, two hundred twenty-two million, two hundred eleven thousand, seven hundred seventy-seven".