69868544 has 66 divisors (see below), whose sum is σ = 146352312. Its totient is φ = 33331200.

The previous prime is 69868537. The next prime is 69868559. The reversal of 69868544 is 44586896.

It is a happy number.

It is a super-2 number, since 2×69868544² = 9763226881359872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69868492 and 69868501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 984029 + ... + 984099.

Almost surely, 2^69868544 is an apocalyptic number.

69868544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69868544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73176156).

69868544 is an abundant number, since it is smaller than the sum of its proper divisors (76483768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69868544 is an equidigital number, since it uses as much as digits as its factorization.

69868544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 104 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 69868544 is about 8358.7405749909. The cubic root of 69868544 is about 411.8703837090.

The spelling of 69868544 in words is "sixty-nine million, eight hundred sixty-eight thousand, five hundred forty-four".