685007001493 has 2 divisors, whose sum is σ = 685007001494. Its totient is φ = 685007001492.

The previous prime is 685007001479. The next prime is 685007001541. The reversal of 685007001493 is 394100700586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619143938449 + 65863063044 = 786857^2 + 256638^2 .

It is a cyclic number.

It is not a de Polignac number, because 685007001493 - 2⁹ = 685007000981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685007001433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342503500746 + 342503500747.

It is an arithmetic number, because the mean of its divisors is an integer number (342503500747).

Almost surely, 2^685007001493 is an apocalyptic number.

It is an amenable number.

685007001493 is a deficient number, since it is larger than the sum of its proper divisors (1).

685007001493 is an equidigital number, since it uses as much as digits as its factorization.

685007001493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 685007001493 in words is "six hundred eighty-five billion, seven million, one thousand, four hundred ninety-three".