69871680 has 112 divisors (see below), whose sum is σ = 246522240. Its totient is φ = 18630144.

The previous prime is 69871663. The next prime is 69871691. The reversal of 69871680 is 8617896.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 15 ways as a sum of consecutive naturals, for example, 4597 + ... + 12683.

Almost surely, 2^69871680 is an apocalyptic number.

69871680 is a gapful number since it is divisible by the number (60) 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 69871680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123261120).

69871680 is an abundant number, since it is smaller than the sum of its proper divisors (176650560).

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

69871680 is a wasteful number, since it uses less digits than its factorization.

69871680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8113 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 69871680 is about 8358.9281609546. The cubic root of 69871680 is about 411.8765457867.

The spelling of 69871680 in words is "sixty-nine million, eight hundred seventy-one thousand, six hundred eighty".