69448643 has 4 divisors (see below), whose sum is σ = 75762168. Its totient is φ = 63135120.

The previous prime is 69448583. The next prime is 69448669. The reversal of 69448643 is 34684496.

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 69448643 - 2⁸ = 69448387 is a prime.

It is a super-2 number, since 2×69448643² = 9646228029082898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69448594 and 69448603.

It is not an unprimeable number, because it can be changed into a prime (69448693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3156746 + ... + 3156767.

It is an arithmetic number, because the mean of its divisors is an integer number (18940542).

Almost surely, 2^69448643 is an apocalyptic number.

69448643 is a deficient number, since it is larger than the sum of its proper divisors (6313525).

69448643 is a wasteful number, since it uses less digits than its factorization.

69448643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313524.

The product of its digits is 497664, while the sum is 44.

The square root of 69448643 is about 8333.5852428592. The cubic root of 69448643 is about 411.0436291775.

The spelling of 69448643 in words is "sixty-nine million, four hundred forty-eight thousand, six hundred forty-three".