685413415437 has 16 divisors (see below), whose sum is σ = 935397760128. Its totient is φ = 446307217920.

The previous prime is 685413415399. The next prime is 685413415481. The reversal of 685413415437 is 734514314586.

It is not a de Polignac number, because 685413415437 - 2¹⁴ = 685413399053 is a prime.

It is a super-2 number, since 2×685413415437² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 685413415437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685412415437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15170364 + ... + 15215477.

It is an arithmetic number, because the mean of its divisors is an integer number (58462360008).

Almost surely, 2^685413415437 is an apocalyptic number.

It is an amenable number.

685413415437 is a deficient number, since it is larger than the sum of its proper divisors (249984344691).

685413415437 is a wasteful number, since it uses less digits than its factorization.

685413415437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30386020.

The product of its digits is 4838400, while the sum is 51.

The spelling of 685413415437 in words is "six hundred eighty-five billion, four hundred thirteen million, four hundred fifteen thousand, four hundred thirty-seven".