667076770668 has 96 divisors (see below), whose sum is σ = 1940736430080. Its totient is φ = 173253349440.

The previous prime is 667076770667. The next prime is 667076770747. The reversal of 667076770668 is 866077670766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 667076770599 and 667076770608.

It is not an unprimeable number, because it can be changed into a prime (667076770667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19075143 + ... + 19110081.

It is an arithmetic number, because the mean of its divisors is an integer number (20216004480).

Almost surely, 2^667076770668 is an apocalyptic number.

It is an amenable number.

667076770668 is an abundant number, since it is smaller than the sum of its proper divisors (1273659659412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667076770668 is a wasteful number, since it uses less digits than its factorization.

667076770668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55627 (or 55625 counting only the distinct ones).

The product of its (nonzero) digits is 149361408, while the sum is 66.

The spelling of 667076770668 in words is "six hundred sixty-seven billion, seventy-six million, seven hundred seventy thousand, six hundred sixty-eight".