6641023 has 4 divisors (see below), whose sum is σ = 6646320. Its totient is φ = 6635728.

The previous prime is 6641021. The next prime is 6641027. The reversal of 6641023 is 3201466.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3201466 = 2 ⋅1600733.

It is a cyclic number.

It is not a de Polignac number, because 6641023 - 2¹ = 6641021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6640985 and 6641003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641021) 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, 411 + ... + 3667.

It is an arithmetic number, because the mean of its divisors is an integer number (1661580).

Almost surely, 2^6641023 is an apocalyptic number.

6641023 is a deficient number, since it is larger than the sum of its proper divisors (5297).

6641023 is a wasteful number, since it uses less digits than its factorization.

6641023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 6641023 is about 2577.0182381970. The cubic root of 6641023 is about 187.9655795593.

Adding to 6641023 its reverse (3201466), we get a palindrome (9842489).

The spelling of 6641023 in words is "six million, six hundred forty-one thousand, twenty-three".