685451464154603 has 2 divisors, whose sum is σ = 685451464154604. Its totient is φ = 685451464154602.

The previous prime is 685451464154539. The next prime is 685451464154659. The reversal of 685451464154603 is 306451464154586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 685451464154603 - 2⁶ = 685451464154539 is a prime.

It is not a weakly prime, because it can be changed into another prime (685451464354603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342725732077301 + 342725732077302.

It is an arithmetic number, because the mean of its divisors is an integer number (342725732077302).

Almost surely, 2^{685451464154603} is an apocalyptic number.

685451464154603 is a deficient number, since it is larger than the sum of its proper divisors (1).

685451464154603 is an equidigital number, since it uses as much as digits as its factorization.

685451464154603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888000, while the sum is 62.

The spelling of 685451464154603 in words is "six hundred eighty-five trillion, four hundred fifty-one billion, four hundred sixty-four million, one hundred fifty-four thousand, six hundred three".