3653481 has 16 divisors (see below), whose sum is σ = 5475456. Its totient is φ = 2150016.

The previous prime is 3653471. The next prime is 3653483. The reversal of 3653481 is 1843563.

It is not a de Polignac number, because 3653481 - 2⁹ = 3652969 is a prime.

It is a super-2 number, since 2×3653481² = 26695846834722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3653483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140 + ... + 2933.

It is an arithmetic number, because the mean of its divisors is an integer number (342216).

Almost surely, 2^3653481 is an apocalyptic number.

It is an amenable number.

3653481 is a deficient number, since it is larger than the sum of its proper divisors (1821975).

3653481 is a wasteful number, since it uses less digits than its factorization.

3653481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its digits is 8640, while the sum is 30.

The square root of 3653481 is about 1911.4081196856. The cubic root of 3653481 is about 154.0171032896.

The spelling of 3653481 in words is "three million, six hundred fifty-three thousand, four hundred eighty-one".