670370723557 has 2 divisors, whose sum is σ = 670370723558. Its totient is φ = 670370723556.

The previous prime is 670370723551. The next prime is 670370723683. The reversal of 670370723557 is 755327073076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667838721796 + 2532001761 = 817214^2 + 50319^2 .

It is a cyclic number.

It is not a de Polignac number, because 670370723557 - 2³ = 670370723549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670370723551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335185361778 + 335185361779.

It is an arithmetic number, because the mean of its divisors is an integer number (335185361779).

Almost surely, 2^670370723557 is an apocalyptic number.

It is an amenable number.

670370723557 is a deficient number, since it is larger than the sum of its proper divisors (1).

670370723557 is an equidigital number, since it uses as much as digits as its factorization.

670370723557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6482700, while the sum is 52.

The spelling of 670370723557 in words is "six hundred seventy billion, three hundred seventy million, seven hundred twenty-three thousand, five hundred fifty-seven".