667606620120701 has 8 divisors (see below), whose sum is σ = 676849305190200. Its totient is φ = 658366567183872.

The previous prime is 667606620120691. The next prime is 667606620120827. The reversal of 667606620120701 is 107021026606766.

It can be written as a sum of positive squares in 4 ways, for example, as 461078133652900 + 206528486467801 = 21472730^2 + 14371099^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667606620120701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667606620120701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667606620020701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657522380 + ... + 658536933.

It is an arithmetic number, because the mean of its divisors is an integer number (84606163148775).

Almost surely, 2^{667606620120701} is an apocalyptic number.

It is an amenable number.

667606620120701 is a deficient number, since it is larger than the sum of its proper divisors (9242685069499).

667606620120701 is a wasteful number, since it uses less digits than its factorization.

667606620120701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316066335.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 667606620120701 in words is "six hundred sixty-seven trillion, six hundred six billion, six hundred twenty million, one hundred twenty thousand, seven hundred one".