671079329 has 2 divisors, whose sum is σ = 671079330. Its totient is φ = 671079328.

The previous prime is 671079287. The next prime is 671079337. The reversal of 671079329 is 923970176.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380445025 + 290634304 = 19505^2 + 17048^2 .

It is a cyclic number.

It is not a de Polignac number, because 671079329 - 2¹² = 671075233 is a prime.

It is a super-2 number, since 2×671079329² = 900694931622180482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671079329.

It is not a weakly prime, because it can be changed into another prime (671079379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335539664 + 335539665.

It is an arithmetic number, because the mean of its divisors is an integer number (335539665).

Almost surely, 2^671079329 is an apocalyptic number.

It is an amenable number.

671079329 is a deficient number, since it is larger than the sum of its proper divisors (1).

671079329 is an equidigital number, since it uses as much as digits as its factorization.

671079329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 671079329 is about 25905.1988797616. The cubic root of 671079329 is about 875.5036356110.

The spelling of 671079329 in words is "six hundred seventy-one million, seventy-nine thousand, three hundred twenty-nine".