667870064052 has 48 divisors (see below), whose sum is σ = 1650524843520. Its totient is φ = 209465270272.

The previous prime is 667870064041. The next prime is 667870064053. The reversal of 667870064052 is 250460078766.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 667870063986 and 667870064004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667870064053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197908 + ... + 1172564.

It is an arithmetic number, because the mean of its divisors is an integer number (34385934240).

Almost surely, 2^667870064052 is an apocalyptic number.

It is an amenable number.

667870064052 is an abundant number, since it is smaller than the sum of its proper divisors (982654779468).

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

667870064052 is a wasteful number, since it uses less digits than its factorization.

667870064052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978040 (or 978038 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 667870064052 in words is "six hundred sixty-seven billion, eight hundred seventy million, sixty-four thousand, fifty-two".