6641481 has 16 divisors (see below), whose sum is σ = 11040768. Its totient is φ = 3450000.

The previous prime is 6641477. The next prime is 6641489. The reversal of 6641481 is 1841466.

It is not a de Polignac number, because 6641481 - 2² = 6641477 is a prime.

It is a super-3 number, since 3×6641481³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6641489) 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, 14145 + ... + 14606.

It is an arithmetic number, because the mean of its divisors is an integer number (690048).

Almost surely, 2^6641481 is an apocalyptic number.

It is an amenable number.

6641481 is a deficient number, since it is larger than the sum of its proper divisors (4399287).

6641481 is a wasteful number, since it uses less digits than its factorization.

6641481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28772.

The product of its digits is 4608, while the sum is 30.

The square root of 6641481 is about 2577.1070990551. The cubic root of 6641481 is about 187.9699004928.

It can be divided in two parts, 664 and 1481, that added together give a triangular number (2145 = T₆₅).

The spelling of 6641481 in words is "six million, six hundred forty-one thousand, four hundred eighty-one".