667652028770 has 16 divisors (see below), whose sum is σ = 1224448627320. Its totient is φ = 262021928064.

The previous prime is 667652028761. The next prime is 667652028829. The reversal of 667652028770 is 77820256766.

It can be written as a sum of positive squares in 4 ways, for example, as 392638838881 + 275013189889 = 626609^2 + 524417^2 .

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, 629859875 + ... + 629860934.

Almost surely, 2^667652028770 is an apocalyptic number.

667652028770 is a deficient number, since it is larger than the sum of its proper divisors (556796598550).

667652028770 is a wasteful number, since it uses less digits than its factorization.

667652028770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259720869.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 667652028770 in words is "six hundred sixty-seven billion, six hundred fifty-two million, twenty-eight thousand, seven hundred seventy".