685547124157 has 8 divisors (see below), whose sum is σ = 829569629376. Its totient is φ = 553046419392.

The previous prime is 685547124149. The next prime is 685547124167. The reversal of 685547124157 is 751421745586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685547124157 - 2³ = 685547124149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685547124098 and 685547124107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685547124127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880449983 + ... + 2880450220.

It is an arithmetic number, because the mean of its divisors is an integer number (103696203672).

Almost surely, 2^685547124157 is an apocalyptic number.

It is an amenable number.

685547124157 is a deficient number, since it is larger than the sum of its proper divisors (144022505219).

685547124157 is a wasteful number, since it uses less digits than its factorization.

685547124157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760900227.

The product of its digits is 9408000, while the sum is 55.

The spelling of 685547124157 in words is "six hundred eighty-five billion, five hundred forty-seven million, one hundred twenty-four thousand, one hundred fifty-seven".