5641645 has 8 divisors (see below), whose sum is σ = 6914304. Its totient is φ = 4417104.

The previous prime is 5641633. The next prime is 5641661. The reversal of 5641645 is 5461465.

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 5641645 - 2⁹ = 5641133 is a prime.

It is a super-3 number, since 3×5641645³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

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, 11769 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (864288).

Almost surely, 2^5641645 is an apocalyptic number.

It is an amenable number.

5641645 is a deficient number, since it is larger than the sum of its proper divisors (1272659).

5641645 is a wasteful number, since it uses less digits than its factorization.

5641645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24059.

The product of its digits is 14400, while the sum is 31.

The square root of 5641645 is about 2375.2147271352. The cubic root of 5641645 is about 178.0199131869.

It can be divided in two parts, 564 and 1645, that added together give a square (2209 = 47²).

The spelling of 5641645 in words is "five million, six hundred forty-one thousand, six hundred forty-five".