670520725439 has 2 divisors, whose sum is σ = 670520725440. Its totient is φ = 670520725438.

The previous prime is 670520725403. The next prime is 670520725477. The reversal of 670520725439 is 934527025076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670520725439 - 2²⁰ = 670519676863 is a prime.

It is a super-3 number, since 3×670520725439³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670520725639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335260362719 + 335260362720.

It is an arithmetic number, because the mean of its divisors is an integer number (335260362720).

Almost surely, 2^670520725439 is an apocalyptic number.

670520725439 is a deficient number, since it is larger than the sum of its proper divisors (1).

670520725439 is an equidigital number, since it uses as much as digits as its factorization.

670520725439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 670520725439 in words is "six hundred seventy billion, five hundred twenty million, seven hundred twenty-five thousand, four hundred thirty-nine".