667122663 has 8 divisors (see below), whose sum is σ = 890420608. Its totient is φ = 444286584.

The previous prime is 667122649. The next prime is 667122671. The reversal of 667122663 is 366221766.

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

It is a de Polignac number, because none of the positive numbers 2^k-667122663 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 (667127663) 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, 112081 + ... + 117882.

It is an arithmetic number, because the mean of its divisors is an integer number (111302576).

Almost surely, 2^667122663 is an apocalyptic number.

667122663 is a deficient number, since it is larger than the sum of its proper divisors (223297945).

667122663 is a wasteful number, since it uses less digits than its factorization.

667122663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230933.

The product of its digits is 108864, while the sum is 39.

The square root of 667122663 is about 25828.7177962825. The cubic root of 667122663 is about 873.7795940865.

The spelling of 667122663 in words is "six hundred sixty-seven million, one hundred twenty-two thousand, six hundred sixty-three".