667670745460 has 24 divisors (see below), whose sum is σ = 1405439007336. Its totient is φ = 266433928320.

The previous prime is 667670745457. The next prime is 667670745479. The reversal of 667670745460 is 64547076766.

It can be written as a sum of positive squares in 4 ways, for example, as 43883546256 + 623787199204 = 209484^2 + 789802^2 .

It is a super-2 number, since 2×667670745460² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 667670745395 and 667670745404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39639487 + ... + 39656326.

It is an arithmetic number, because the mean of its divisors is an integer number (58559958639).

Almost surely, 2^667670745460 is an apocalyptic number.

It is an amenable number.

667670745460 is an abundant number, since it is smaller than the sum of its proper divisors (737768261876).

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

667670745460 is a wasteful number, since it uses less digits than its factorization.

667670745460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79296243 (or 79296241 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 58.

The spelling of 667670745460 in words is "six hundred sixty-seven billion, six hundred seventy million, seven hundred forty-five thousand, four hundred sixty".