6442075623 has 4 divisors (see below), whose sum is σ = 8589434168. Its totient is φ = 4294717080.

The previous prime is 6442075613. The next prime is 6442075663. The reversal of 6442075623 is 3265702446.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6442075623 - 2²² = 6437881319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442075613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073679268 + ... + 1073679273.

It is an arithmetic number, because the mean of its divisors is an integer number (2147358542).

Almost surely, 2^6442075623 is an apocalyptic number.

6442075623 is a deficient number, since it is larger than the sum of its proper divisors (2147358545).

6442075623 is a wasteful number, since it uses less digits than its factorization.

6442075623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147358544.

The product of its (nonzero) digits is 241920, while the sum is 39.

The square root of 6442075623 is about 80262.5418423812. The cubic root of 6442075623 is about 1860.6953525118.

It can be divided in two parts, 644207562 and 3, that added together give a triangular number (644207565 = T₃₅₈₉₄).

The spelling of 6442075623 in words is "six billion, four hundred forty-two million, seventy-five thousand, six hundred twenty-three".