667040066740 has 48 divisors (see below), whose sum is σ = 1402616754000. Its totient is φ = 266467184640.

The previous prime is 667040066683. The next prime is 667040066767. The reversal of 667040066740 is 47660040766.

It can be written as a sum of positive squares in 8 ways, for example, as 22995296164 + 644044770576 = 151642^2 + 802524^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64926244 + ... + 64936516.

It is an arithmetic number, because the mean of its divisors is an integer number (29221182375).

Almost surely, 2^667040066740 is an apocalyptic number.

It is an amenable number.

667040066740 is an abundant number, since it is smaller than the sum of its proper divisors (735576687260).

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

667040066740 is a wasteful number, since it uses less digits than its factorization.

667040066740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14212 (or 14210 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 667040066740 in words is "six hundred sixty-seven billion, forty million, sixty-six thousand, seven hundred forty".