6445069 has 4 divisors (see below), whose sum is σ = 6494400. Its totient is φ = 6395740.

The previous prime is 6445051. The next prime is 6445079. The reversal of 6445069 is 9605446.

6445069 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9605446 = 2 ⋅4802723.

It is a cyclic number.

It is not a de Polignac number, because 6445069 - 2⁷ = 6444941 is a prime.

It is a super-2 number, since 2×6445069² = 83077828829522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445079) 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, 24469 + ... + 24730.

It is an arithmetic number, because the mean of its divisors is an integer number (1623600).

Almost surely, 2^6445069 is an apocalyptic number.

It is an amenable number.

6445069 is a deficient number, since it is larger than the sum of its proper divisors (49331).

6445069 is a wasteful number, since it uses less digits than its factorization.

6445069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49330.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6445069 is about 2538.7140445509. The cubic root of 6445069 is about 186.0983504992.

The spelling of 6445069 in words is "six million, four hundred forty-five thousand, sixty-nine".