7644481 has 4 divisors (see below), whose sum is σ = 8232532. Its totient is φ = 7056432.

The previous prime is 7644467. The next prime is 7644493. The reversal of 7644481 is 1844467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1844467 = 41 ⋅44987.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 6843456 = 895^2 + 2616^2 .

It is a cyclic number.

It is not a de Polignac number, because 7644481 - 2⁵ = 7644449 is a prime.

It is a super-2 number, since 2×7644481² = 116876179518722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7644421) 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, 294006 + ... + 294031.

It is an arithmetic number, because the mean of its divisors is an integer number (2058133).

Almost surely, 2^7644481 is an apocalyptic number.

It is an amenable number.

7644481 is a deficient number, since it is larger than the sum of its proper divisors (588051).

7644481 is a wasteful number, since it uses less digits than its factorization.

7644481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588050.

The product of its digits is 21504, while the sum is 34.

The square root of 7644481 is about 2764.8654578478. The cubic root of 7644481 is about 196.9923382489.

The spelling of 7644481 in words is "seven million, six hundred forty-four thousand, four hundred eighty-one".