6442805 has 8 divisors (see below), whose sum is σ = 8138400. Its totient is φ = 4882896.

The previous prime is 6442801. The next prime is 6442811. The reversal of 6442805 is 5082446.

6442805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6442805 - 2² = 6442801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33815 + ... + 34004.

It is an arithmetic number, because the mean of its divisors is an integer number (1017300).

Almost surely, 2^6442805 is an apocalyptic number.

It is an amenable number.

6442805 is a deficient number, since it is larger than the sum of its proper divisors (1695595).

6442805 is a wasteful number, since it uses less digits than its factorization.

6442805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67843.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 6442805 is about 2538.2681103461. The cubic root of 6442805 is about 186.0765573005.

It can be divided in two parts, 6442 and 805, that multiplied together give a triangular number (5185810 = T₃₂₂₀).

The spelling of 6442805 in words is "six million, four hundred forty-two thousand, eight hundred five".