671562472673 has 4 divisors (see below), whose sum is σ = 672560337348. Its totient is φ = 670564608000.

The previous prime is 671562472667. The next prime is 671562472733. The reversal of 671562472673 is 376274265176.

671562472673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323070602449 + 348491870224 = 568393^2 + 590332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671562472673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671562472613) 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, 498931328 + ... + 498932673.

It is an arithmetic number, because the mean of its divisors is an integer number (168140084337).

Almost surely, 2^671562472673 is an apocalyptic number.

It is an amenable number.

671562472673 is a deficient number, since it is larger than the sum of its proper divisors (997864675).

671562472673 is an equidigital number, since it uses as much as digits as its factorization.

671562472673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997864674.

The product of its digits is 17781120, while the sum is 56.

The spelling of 671562472673 in words is "six hundred seventy-one billion, five hundred sixty-two million, four hundred seventy-two thousand, six hundred seventy-three".