69644423 has 4 divisors (see below), whose sum is σ = 70683960. Its totient is φ = 68604888.

The previous prime is 69644417. The next prime is 69644479. The reversal of 69644423 is 32444696.

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 69644423 - 2²⁰ = 68595847 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 (69644413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519668 + ... + 519801.

It is an arithmetic number, because the mean of its divisors is an integer number (17670990).

Almost surely, 2^69644423 is an apocalyptic number.

69644423 is a deficient number, since it is larger than the sum of its proper divisors (1039537).

69644423 is a wasteful number, since it uses less digits than its factorization.

69644423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039536.

The product of its digits is 124416, while the sum is 38.

The square root of 69644423 is about 8345.3234209346. The cubic root of 69644423 is about 411.4295192202.

The spelling of 69644423 in words is "sixty-nine million, six hundred forty-four thousand, four hundred twenty-three".