667674231447 has 16 divisors (see below), whose sum is σ = 942936844032. Its totient is φ = 418782660480.

The previous prime is 667674231397. The next prime is 667674231461. The reversal of 667674231447 is 744132476766.

It is not a de Polignac number, because 667674231447 - 2⁷ = 667674231319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667674231347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202993 + ... + 2487674.

It is an arithmetic number, because the mean of its divisors is an integer number (58933552752).

Almost surely, 2^667674231447 is an apocalyptic number.

667674231447 is a deficient number, since it is larger than the sum of its proper divisors (275262612585).

667674231447 is a wasteful number, since it uses less digits than its factorization.

667674231447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693478.

The product of its digits is 28449792, while the sum is 57.

The spelling of 667674231447 in words is "six hundred sixty-seven billion, six hundred seventy-four million, two hundred thirty-one thousand, four hundred forty-seven".