667197147297 has 4 divisors (see below), whose sum is σ = 889596196400. Its totient is φ = 444798098196.

The previous prime is 667197147271. The next prime is 667197147299. The reversal of 667197147297 is 792741791766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 667197147297 - 2⁸ = 667197147041 is a prime.

It is a super-2 number, since 2×667197147297² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667197147299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111199524547 + ... + 111199524552.

It is an arithmetic number, because the mean of its divisors is an integer number (222399049100).

Almost surely, 2^667197147297 is an apocalyptic number.

It is an amenable number.

667197147297 is a deficient number, since it is larger than the sum of its proper divisors (222399049103).

667197147297 is a wasteful number, since it uses less digits than its factorization.

667197147297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222399049102.

The product of its digits is 56010528, while the sum is 66.

The spelling of 667197147297 in words is "six hundred sixty-seven billion, one hundred ninety-seven million, one hundred forty-seven thousand, two hundred ninety-seven".