671736319 has 2 divisors, whose sum is σ = 671736320. Its totient is φ = 671736318.

The previous prime is 671736301. The next prime is 671736379. The reversal of 671736319 is 913637176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671736319 - 2⁵ = 671736287 is a prime.

It is a super-2 number, since 2×671736319² = 902459364527339522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671736379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335868159 + 335868160.

It is an arithmetic number, because the mean of its divisors is an integer number (335868160).

Almost surely, 2^671736319 is an apocalyptic number.

671736319 is a deficient number, since it is larger than the sum of its proper divisors (1).

671736319 is an equidigital number, since it uses as much as digits as its factorization.

671736319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 671736319 is about 25917.8764369306. The cubic root of 671736319 is about 875.7892498962.

The spelling of 671736319 in words is "six hundred seventy-one million, seven hundred thirty-six thousand, three hundred nineteen".