671726061 has 8 divisors (see below), whose sum is σ = 995149760. Its totient is φ = 447817356.

The previous prime is 671726051. The next prime is 671726093. The reversal of 671726061 is 160627176.

671726061 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 671726061 - 2¹⁰ = 671725037 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 (671726051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12439345 + ... + 12439398.

It is an arithmetic number, because the mean of its divisors is an integer number (124393720).

Almost surely, 2^671726061 is an apocalyptic number.

It is an amenable number.

671726061 is a deficient number, since it is larger than the sum of its proper divisors (323423699).

671726061 is a wasteful number, since it uses less digits than its factorization.

671726061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24878752 (or 24878746 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 671726061 is about 25917.6785418756. The cubic root of 671726061 is about 875.7847918514.

The spelling of 671726061 in words is "six hundred seventy-one million, seven hundred twenty-six thousand, sixty-one".