671956007 has 2 divisors, whose sum is σ = 671956008. Its totient is φ = 671956006.

The previous prime is 671955989. The next prime is 671956037. The reversal of 671956007 is 700659176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671956007 - 2¹⁴ = 671939623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671956037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335978003 + 335978004.

It is an arithmetic number, because the mean of its divisors is an integer number (335978004).

Almost surely, 2^671956007 is an apocalyptic number.

671956007 is a deficient number, since it is larger than the sum of its proper divisors (1).

671956007 is an equidigital number, since it uses as much as digits as its factorization.

671956007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 671956007 is about 25922.1142463342. The cubic root of 671956007 is about 875.8847136532.

It can be divided in two parts, 6719 and 56007, that added together give a palindrome (62726).

The spelling of 671956007 in words is "six hundred seventy-one million, nine hundred fifty-six thousand, seven".