671426519 has 2 divisors, whose sum is σ = 671426520. Its totient is φ = 671426518.

The previous prime is 671426507. The next prime is 671426527. The reversal of 671426519 is 915624176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671426519 - 2⁸ = 671426263 is a prime.

It is a super-2 number, since 2×671426519² = 901627140832914722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671426219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335713259 + 335713260.

It is an arithmetic number, because the mean of its divisors is an integer number (335713260).

Almost surely, 2^671426519 is an apocalyptic number.

671426519 is a deficient number, since it is larger than the sum of its proper divisors (1).

671426519 is an equidigital number, since it uses as much as digits as its factorization.

671426519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 671426519 is about 25911.8991777909. The cubic root of 671426519 is about 875.6545932744.

It can be divided in two parts, 6714 and 26519, that added together give a palindrome (33233).

The spelling of 671426519 in words is "six hundred seventy-one million, four hundred twenty-six thousand, five hundred nineteen".