667672465527 has 24 divisors (see below), whose sum is σ = 992466254000. Its totient is φ = 432216829440.

The previous prime is 667672465511. The next prime is 667672465531. The reversal of 667672465527 is 725564276766.

It is a happy number.

667672465527 is a `hidden beast` number, since 6 + 6 + 7 + 6 + 72 + 4 + 6 + 552 + 7 = 666.

667672465527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667672465527 - 2⁴ = 667672465511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667672465547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1842874 + ... + 2175207.

Almost surely, 2^667672465527 is an apocalyptic number.

667672465527 is a deficient number, since it is larger than the sum of its proper divisors (324793788473).

667672465527 is a wasteful number, since it uses less digits than its factorization.

667672465527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018623 (or 4018620 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 63.

The spelling of 667672465527 in words is "six hundred sixty-seven billion, six hundred seventy-two million, four hundred sixty-five thousand, five hundred twenty-seven".