671464219 has 2 divisors, whose sum is σ = 671464220. Its totient is φ = 671464218.

The previous prime is 671464169. The next prime is 671464223. The reversal of 671464219 is 912464176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671464219 - 2⁷ = 671464091 is a prime.

It is a super-2 number, since 2×671464219² = 901728394794559922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (671464229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335732109 + 335732110.

It is an arithmetic number, because the mean of its divisors is an integer number (335732110).

Almost surely, 2^671464219 is an apocalyptic number.

671464219 is a deficient number, since it is larger than the sum of its proper divisors (1).

671464219 is an equidigital number, since it uses as much as digits as its factorization.

671464219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 671464219 is about 25912.6266325898. The cubic root of 671464219 is about 875.6709820424.

The spelling of 671464219 in words is "six hundred seventy-one million, four hundred sixty-four thousand, two hundred nineteen".