69850816 has 56 divisors (see below), whose sum is σ = 165323520. Its totient is φ = 28630272.

The previous prime is 69850811. The next prime is 69850831. The reversal of 69850816 is 61805896.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (69850811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6915 + ... + 13693.

Almost surely, 2^69850816 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 69850816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82661760).

69850816 is an abundant number, since it is smaller than the sum of its proper divisors (95472704).

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

69850816 is a wasteful number, since it uses less digits than its factorization.

69850816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821 (or 6811 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 69850816 is about 8357.6800608781. The cubic root of 69850816 is about 411.8355456384.

The spelling of 69850816 in words is "sixty-nine million, eight hundred fifty thousand, eight hundred sixteen".