667575720670 has 8 divisors (see below), whose sum is σ = 1201636297224. Its totient is φ = 267030288264.

The previous prime is 667575720607. The next prime is 667575720671. The reversal of 667575720670 is 76027575766.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667575720671) 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, 33378786024 + ... + 33378786043.

It is an arithmetic number, because the mean of its divisors is an integer number (150204537153).

Almost surely, 2^667575720670 is an apocalyptic number.

667575720670 is a deficient number, since it is larger than the sum of its proper divisors (534060576554).

667575720670 is a wasteful number, since it uses less digits than its factorization.

667575720670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66757572074.

The product of its (nonzero) digits is 25930800, while the sum is 58.

The spelling of 667575720670 in words is "six hundred sixty-seven billion, five hundred seventy-five million, seven hundred twenty thousand, six hundred seventy".