3491685 has 24 divisors (see below), whose sum is σ = 6249984. Its totient is φ = 1801440.

The previous prime is 3491669. The next prime is 3491689. The reversal of 3491685 is 5861943.

It is not a de Polignac number, because 3491685 - 2⁴ = 3491669 is a prime.

3491685 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144 + ... + 2646.

It is an arithmetic number, because the mean of its divisors is an integer number (260416).

Almost surely, 2^3491685 is an apocalyptic number.

It is an amenable number.

3491685 is a deficient number, since it is larger than the sum of its proper divisors (2758299).

3491685 is a wasteful number, since it uses less digits than its factorization.

3491685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545 (or 2542 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3491685 is about 1868.6050947164. The cubic root of 3491685 is about 151.7091187903.

It can be divided in two parts, 34 and 91685, that added together give a palindrome (91719).

The spelling of 3491685 in words is "three million, four hundred ninety-one thousand, six hundred eighty-five".