69255680 has 80 divisors (see below), whose sum is σ = 178910424. Its totient is φ = 25559040.

The previous prime is 69255677. The next prime is 69255701. The reversal of 69255680 is 8655296.

It can be written as a sum of positive squares in 4 ways, for example, as 39137536 + 30118144 = 6256^2 + 5488^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32240 + ... + 34320.

Almost surely, 2^69255680 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 69255680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89455212).

69255680 is an abundant number, since it is smaller than the sum of its proper divisors (109654744).

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

69255680 is a wasteful number, since it uses less digits than its factorization.

69255680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 69255680 is about 8321.9997596732. Note that the first 3 decimals coincide. The cubic root of 69255680 is about 410.6625812453.

The spelling of 69255680 in words is "sixty-nine million, two hundred fifty-five thousand, six hundred eighty".