671304763 has 4 divisors (see below), whose sum is σ = 675324720. Its totient is φ = 667284808.

The previous prime is 671304743. The next prime is 671304779. The reversal of 671304763 is 367403176.

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 671304763 - 2¹⁷ = 671173691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671304743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009728 + ... + 2010061.

It is an arithmetic number, because the mean of its divisors is an integer number (168831180).

Almost surely, 2^671304763 is an apocalyptic number.

671304763 is a deficient number, since it is larger than the sum of its proper divisors (4019957).

671304763 is a wasteful number, since it uses less digits than its factorization.

671304763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019956.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 671304763 is about 25909.5496487299. The cubic root of 671304763 is about 875.6016598841.

The spelling of 671304763 in words is "six hundred seventy-one million, three hundred four thousand, seven hundred sixty-three".