671680763 has 8 divisors (see below), whose sum is σ = 725926656. Its totient is φ = 617803200.

The previous prime is 671680739. The next prime is 671680843. The reversal of 671680763 is 367086176.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 671680763 - 2¹² = 671676667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671680703) 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, 88283 + ... + 95588.

It is an arithmetic number, because the mean of its divisors is an integer number (90740832).

Almost surely, 2^671680763 is an apocalyptic number.

671680763 is a deficient number, since it is larger than the sum of its proper divisors (54245893).

671680763 is a wasteful number, since it uses less digits than its factorization.

671680763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184165.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 671680763 is about 25916.8046448631. The cubic root of 671680763 is about 875.7651051599.

The spelling of 671680763 in words is "six hundred seventy-one million, six hundred eighty thousand, seven hundred sixty-three".