5605401685 has 16 divisors (see below), whose sum is σ = 7250528880. Its totient is φ = 4135587840.

The previous prime is 5605401673. The next prime is 5605401701. The reversal of 5605401685 is 5861045065.

It can be written as a sum of positive squares in 8 ways, for example, as 2369839761 + 3235561924 = 48681^2 + 56882^2 .

It is not a de Polignac number, because 5605401685 - 2¹¹ = 5605399637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33205 + ... + 110965.

It is an arithmetic number, because the mean of its divisors is an integer number (453158055).

Almost surely, 2^5605401685 is an apocalyptic number.

It is an amenable number.

5605401685 is a deficient number, since it is larger than the sum of its proper divisors (1645127195).

5605401685 is a wasteful number, since it uses less digits than its factorization.

5605401685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78888.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 5605401685 is about 74869.2305623612. The cubic root of 5605401685 is about 1776.3787935380.

The spelling of 5605401685 in words is "five billion, six hundred five million, four hundred one thousand, six hundred eighty-five".