685461292254 has 24 divisors (see below), whose sum is σ = 1487419825320. Its totient is φ = 228140375568.

The previous prime is 685461292253. The next prime is 685461292333. The reversal of 685461292254 is 452292164586.

685461292254 is a `hidden beast` number, since 6 + 8 + 546 + 1 + 2 + 92 + 2 + 5 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 685461292254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685461292253) 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, 28881297 + ... + 28905020.

It is an arithmetic number, because the mean of its divisors is an integer number (61975826055).

Almost surely, 2^685461292254 is an apocalyptic number.

685461292254 is an abundant number, since it is smaller than the sum of its proper divisors (801958533066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685461292254 is a wasteful number, since it uses less digits than its factorization.

685461292254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57786984 (or 57786981 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 685461292254 in words is "six hundred eighty-five billion, four hundred sixty-one million, two hundred ninety-two thousand, two hundred fifty-four".