685350373437 has 12 divisors (see below), whose sum is σ = 989957907900. Its totient is φ = 456896848128.

The previous prime is 685350373427. The next prime is 685350373441. The reversal of 685350373437 is 734373053586.

685350373437 is a `hidden beast` number, since 6 + 8 + 535 + 0 + 3 + 73 + 4 + 37 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 233935701561 + 451414671876 = 483669^2 + 671874^2 .

It is not a de Polignac number, because 685350373437 - 2¹¹ = 685350371389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685350373427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1795663 + ... + 2143619.

It is an arithmetic number, because the mean of its divisors is an integer number (82496492325).

Almost surely, 2^685350373437 is an apocalyptic number.

It is an amenable number.

685350373437 is a deficient number, since it is larger than the sum of its proper divisors (304607534463).

685350373437 is a wasteful number, since it uses less digits than its factorization.

685350373437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566812 (or 566809 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 54.

The spelling of 685350373437 in words is "six hundred eighty-five billion, three hundred fifty million, three hundred seventy-three thousand, four hundred thirty-seven".