3651481 has 8 divisors (see below), whose sum is σ = 3883680. Its totient is φ = 3421248.

The previous prime is 3651467. The next prime is 3651491. The reversal of 3651481 is 1841563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3651481 - 2⁵ = 3651449 is a prime.

It is a super-2 number, since 2×3651481² = 26666626986722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5590 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (485460).

Almost surely, 2^3651481 is an apocalyptic number.

It is an amenable number.

3651481 is a deficient number, since it is larger than the sum of its proper divisors (232199).

3651481 is a wasteful number, since it uses less digits than its factorization.

3651481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its digits is 2880, while the sum is 28.

The square root of 3651481 is about 1910.8848735599. The cubic root of 3651481 is about 153.9889939849.

The spelling of 3651481 in words is "three million, six hundred fifty-one thousand, four hundred eighty-one".