69893856 has 144 divisors (see below), whose sum is σ = 214053840. Its totient is φ = 21565440.

The previous prime is 69893773. The next prime is 69893867. The reversal of 69893856 is 65839896.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×69893856² = 9770302213097472, which contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 289896 + ... + 290136.

It is an arithmetic number, because the mean of its divisors is an integer number (1486485).

Almost surely, 2^69893856 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 69893856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107026920).

69893856 is an abundant number, since it is smaller than the sum of its proper divisors (144159984).

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

69893856 is a wasteful number, since it uses less digits than its factorization.

69893856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 318 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 69893856 is about 8360.2545415795. The cubic root of 69893856 is about 411.9201152184.

The spelling of 69893856 in words is "sixty-nine million, eight hundred ninety-three thousand, eight hundred fifty-six".