69444975 has 24 divisors (see below), whose sum is σ = 115349760. Its totient is φ = 36865120.

The previous prime is 69444959. The next prime is 69444979. The reversal of 69444975 is 57944496.

It is a happy number.

It is not a de Polignac number, because 69444975 - 2⁴ = 69444959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69444979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14986 + ... + 19064.

It is an arithmetic number, because the mean of its divisors is an integer number (4806240).

Almost surely, 2^69444975 is an apocalyptic number.

69444975 is a deficient number, since it is larger than the sum of its proper divisors (45904785).

69444975 is a wasteful number, since it uses less digits than its factorization.

With its successor (69444976) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (4314).

With its successor (69444976) it forms an eRAP, since the sums of their prime factors are consecutive (4319 and 4320).

69444975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4314 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 69444975 is about 8333.3651666059. The cubic root of 69444975 is about 411.0363924891.

The spelling of 69444975 in words is "sixty-nine million, four hundred forty-four thousand, nine hundred seventy-five".