671291363 has 4 divisors (see below), whose sum is σ = 700477968. Its totient is φ = 642104760.

The previous prime is 671291353. The next prime is 671291371. The reversal of 671291363 is 363192176.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 671291363 - 2⁴ = 671291347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671291353) 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, 14593268 + ... + 14593313.

It is an arithmetic number, because the mean of its divisors is an integer number (175119492).

Almost surely, 2^671291363 is an apocalyptic number.

671291363 is a deficient number, since it is larger than the sum of its proper divisors (29186605).

671291363 is a wasteful number, since it uses less digits than its factorization.

671291363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29186604.

The product of its digits is 40824, while the sum is 38.

The square root of 671291363 is about 25909.2910555268. The cubic root of 671291363 is about 875.5958338465.

The spelling of 671291363 in words is "six hundred seventy-one million, two hundred ninety-one thousand, three hundred sixty-three".