671307679 has 8 divisors (see below), whose sum is σ = 812338848. Its totient is φ = 541559040.

The previous prime is 671307673. The next prime is 671307691. The reversal of 671307679 is 976703176.

It is a happy number.

671307679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671307679 - 2³ = 671307671 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 (671307671) 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, 2820502 + ... + 2820739.

It is an arithmetic number, because the mean of its divisors is an integer number (101542356).

Almost surely, 2^671307679 is an apocalyptic number.

671307679 is a deficient number, since it is larger than the sum of its proper divisors (141031169).

671307679 is a wasteful number, since it uses less digits than its factorization.

671307679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641265.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 671307679 is about 25909.6059213567. The cubic root of 671307679 is about 875.6029276892.

The spelling of 671307679 in words is "six hundred seventy-one million, three hundred seven thousand, six hundred seventy-nine".