3681235 has 4 divisors (see below), whose sum is σ = 4417488. Its totient is φ = 2944984.

The previous prime is 3681217. The next prime is 3681239. The reversal of 3681235 is 5321863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5321863 = 31 ⋅171673.

It is a cyclic number.

It is not a de Polignac number, because 3681235 - 2¹⁷ = 3550163 is a prime.

It is a super-2 number, since 2×3681235² = 27102982250450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368119 + ... + 368128.

It is an arithmetic number, because the mean of its divisors is an integer number (1104372).

Almost surely, 2^3681235 is an apocalyptic number.

3681235 is a deficient number, since it is larger than the sum of its proper divisors (736253).

3681235 is an equidigital number, since it uses as much as digits as its factorization.

3681235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736252.

The product of its digits is 4320, while the sum is 28.

The square root of 3681235 is about 1918.6544764496. The cubic root of 3681235 is about 154.4061215100.

It can be divided in two parts, 3681 and 235, that added together give a triangular number (3916 = T₈₈).

The spelling of 3681235 in words is "three million, six hundred eighty-one thousand, two hundred thirty-five".