69681056 has 48 divisors (see below), whose sum is σ = 149103360. Its totient is φ = 31933440.

The previous prime is 69681047. The next prime is 69681083. The reversal of 69681056 is 65018696.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17000 + ... + 20696.

It is an arithmetic number, because the mean of its divisors is an integer number (3106320).

Almost surely, 2^69681056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69681056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74551680).

69681056 is an abundant number, since it is smaller than the sum of its proper divisors (79422304).

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

69681056 is a wasteful number, since it uses less digits than its factorization.

69681056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757 (or 3749 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 69681056 is about 8347.5179544581. The cubic root of 69681056 is about 411.5016439508.

The spelling of 69681056 in words is "sixty-nine million, six hundred eighty-one thousand, fifty-six".