671706707 has 4 divisors (see below), whose sum is σ = 767664816. Its totient is φ = 575748600.

The previous prime is 671706643. The next prime is 671706709. The reversal of 671706707 is 707607176.

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

It is not a de Polignac number, because 671706707 - 2⁶ = 671706643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671706709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47979044 + ... + 47979057.

It is an arithmetic number, because the mean of its divisors is an integer number (191916204).

Almost surely, 2^671706707 is an apocalyptic number.

671706707 is a deficient number, since it is larger than the sum of its proper divisors (95958109).

671706707 is an equidigital number, since it uses as much as digits as its factorization.

671706707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95958108.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 671706707 is about 25917.3051646964. The cubic root of 671706707 is about 875.7763806341.

The spelling of 671706707 in words is "six hundred seventy-one million, seven hundred six thousand, seven hundred seven".