75643223 has 4 divisors (see below), whose sum is σ = 78251640. Its totient is φ = 73034808.

The previous prime is 75643213. The next prime is 75643229. The reversal of 75643223 is 32234657.

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

It is a cyclic number.

It is not a de Polignac number, because 75643223 - 2⁸ = 75642967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75643223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75643229) 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, 1304165 + ... + 1304222.

It is an arithmetic number, because the mean of its divisors is an integer number (19562910).

Almost surely, 2^75643223 is an apocalyptic number.

75643223 is a deficient number, since it is larger than the sum of its proper divisors (2608417).

75643223 is a wasteful number, since it uses less digits than its factorization.

75643223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608416.

The product of its digits is 30240, while the sum is 32.

The square root of 75643223 is about 8697.3112511856. The cubic root of 75643223 is about 422.9184920087.

The spelling of 75643223 in words is "seventy-five million, six hundred forty-three thousand, two hundred twenty-three".