6641845 has 8 divisors (see below), whose sum is σ = 9108864. Its totient is φ = 4554384.

The previous prime is 6641839. The next prime is 6641851. The reversal of 6641845 is 5481466.

It is an interprime number because it is at equal distance from previous prime (6641839) and next prime (6641851).

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 6641845 - 2⁵ = 6641813 is a prime.

It is a super-2 number, since 2×6641845² = 88228210008050, which contains 22 as substring.

It is a Duffinian number.

6641845 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6641845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94849 + ... + 94918.

It is an arithmetic number, because the mean of its divisors is an integer number (1138608).

Almost surely, 2^6641845 is an apocalyptic number.

It is an amenable number.

6641845 is a deficient number, since it is larger than the sum of its proper divisors (2467019).

6641845 is a wasteful number, since it uses less digits than its factorization.

6641845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189779.

The product of its digits is 23040, while the sum is 34.

The square root of 6641845 is about 2577.1777199099. The cubic root of 6641845 is about 187.9733344555.

The spelling of 6641845 in words is "six million, six hundred forty-one thousand, eight hundred forty-five".