605140685 has 4 divisors (see below), whose sum is σ = 726168828. Its totient is φ = 484112544.

The previous prime is 605140673. The next prime is 605140693. The reversal of 605140685 is 586041506.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100060009 + 505080676 = 10003^2 + 22474^2 .

It is a cyclic number.

It is not a de Polignac number, because 605140685 - 2²⁶ = 538031821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60514064 + ... + 60514073.

It is an arithmetic number, because the mean of its divisors is an integer number (181542207).

Almost surely, 2^605140685 is an apocalyptic number.

It is an amenable number.

605140685 is a deficient number, since it is larger than the sum of its proper divisors (121028143).

605140685 is a wasteful number, since it uses less digits than its factorization.

605140685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121028142.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 605140685 is about 24599.6074155666. The cubic root of 605140685 is about 845.8346083172.

The spelling of 605140685 in words is "six hundred five million, one hundred forty thousand, six hundred eighty-five".