671194679 has 4 divisors (see below), whose sum is σ = 682570920. Its totient is φ = 659818440.

The previous prime is 671194669. The next prime is 671194729. The reversal of 671194679 is 976491176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671194679 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 (671194669) 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, 5688032 + ... + 5688149.

It is an arithmetic number, because the mean of its divisors is an integer number (170642730).

Almost surely, 2^671194679 is an apocalyptic number.

671194679 is a deficient number, since it is larger than the sum of its proper divisors (11376241).

671194679 is a wasteful number, since it uses less digits than its factorization.

671194679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11376240.

The product of its digits is 571536, while the sum is 50.

The square root of 671194679 is about 25907.4251711744. The cubic root of 671194679 is about 875.5537953832.

The spelling of 671194679 in words is "six hundred seventy-one million, one hundred ninety-four thousand, six hundred seventy-nine".