671863463 has 2 divisors, whose sum is σ = 671863464. Its totient is φ = 671863462.

The previous prime is 671863453. The next prime is 671863513. The reversal of 671863463 is 364368176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671863463 - 2¹⁴ = 671847079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671863453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335931731 + 335931732.

It is an arithmetic number, because the mean of its divisors is an integer number (335931732).

Almost surely, 2^671863463 is an apocalyptic number.

671863463 is a deficient number, since it is larger than the sum of its proper divisors (1).

671863463 is an equidigital number, since it uses as much as digits as its factorization.

671863463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 671863463 is about 25920.3291452867. The cubic root of 671863463 is about 875.8445018955.

The spelling of 671863463 in words is "six hundred seventy-one million, eight hundred sixty-three thousand, four hundred sixty-three".