671697763 has 4 divisors (see below), whose sum is σ = 732761208. Its totient is φ = 610634320.

The previous prime is 671697757. The next prime is 671697769. The reversal of 671697763 is 367796176.

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

It is an interprime number because it is at equal distance from previous prime (671697757) and next prime (671697769).

It is a cyclic number.

It is not a de Polignac number, because 671697763 - 2⁵ = 671697731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671697763.

It is not an unprimeable number, because it can be changed into a prime (671697769) 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, 30531706 + ... + 30531727.

It is an arithmetic number, because the mean of its divisors is an integer number (183190302).

Almost surely, 2^671697763 is an apocalyptic number.

671697763 is a deficient number, since it is larger than the sum of its proper divisors (61063445).

671697763 is a wasteful number, since it uses less digits than its factorization.

671697763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61063444.

The product of its digits is 2000376, while the sum is 52.

The square root of 671697763 is about 25917.1326153184. The cubic root of 671697763 is about 875.7724935315.

The spelling of 671697763 in words is "six hundred seventy-one million, six hundred ninety-seven thousand, seven hundred sixty-three".