3658481 has 4 divisors (see below), whose sum is σ = 3663600. Its totient is φ = 3653364.

The previous prime is 3658477. The next prime is 3658493. The reversal of 3658481 is 1848563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1848563 = 17 ⋅108739.

It is a cyclic number.

It is not a de Polignac number, because 3658481 - 2² = 3658477 is a prime.

It is a super-2 number, since 2×3658481² = 26768966454722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3658181) 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, 1271 + ... + 2988.

It is an arithmetic number, because the mean of its divisors is an integer number (915900).

Almost surely, 2^3658481 is an apocalyptic number.

It is an amenable number.

3658481 is a deficient number, since it is larger than the sum of its proper divisors (5119).

3658481 is an equidigital number, since it uses as much as digits as its factorization.

3658481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118.

The product of its digits is 23040, while the sum is 35.

The square root of 3658481 is about 1912.7156087615. The cubic root of 3658481 is about 154.0873316993.

The spelling of 3658481 in words is "three million, six hundred fifty-eight thousand, four hundred eighty-one".