667710440764 has 24 divisors (see below), whose sum is σ = 1170068760000. Its totient is φ = 333405388800.

The previous prime is 667710440741. The next prime is 667710440777. The reversal of 667710440764 is 467044017766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8986237 + ... + 9060235.

It is an arithmetic number, because the mean of its divisors is an integer number (48752865000).

Almost surely, 2^667710440764 is an apocalyptic number.

It is an amenable number.

667710440764 is a deficient number, since it is larger than the sum of its proper divisors (502358319236).

667710440764 is a wasteful number, since it uses less digits than its factorization.

667710440764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77013 (or 77011 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 52.

The spelling of 667710440764 in words is "six hundred sixty-seven billion, seven hundred ten million, four hundred forty thousand, seven hundred sixty-four".