671703847 has 8 divisors (see below), whose sum is σ = 711504000. Its totient is φ = 631935744.

The previous prime is 671703797. The next prime is 671703853. The reversal of 671703847 is 748307176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671703847 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 (671703547) 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, 45354 + ... + 58312.

It is an arithmetic number, because the mean of its divisors is an integer number (88938000).

Almost surely, 2^671703847 is an apocalyptic number.

671703847 is the 12959-th decagonal number.

671703847 is a deficient number, since it is larger than the sum of its proper divisors (39800153).

671703847 is a wasteful number, since it uses less digits than its factorization.

671703847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16025.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 671703847 is about 25917.2499891482. The cubic root of 671703847 is about 875.7751376690.

It can be divided in two parts, 67170 and 3847, that added together give a palindrome (71017).

The spelling of 671703847 in words is "six hundred seventy-one million, seven hundred three thousand, eight hundred forty-seven".