69520 has 40 divisors (see below), whose sum is σ = 178560. Its totient is φ = 24960.

The previous prime is 69499. The next prime is 69539. The reversal of 69520 is 2596.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 69491 and 69500.

It is an unprimeable number.

69520 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 841 + ... + 919.

It is an arithmetic number, because the mean of its divisors is an integer number (4464).

2⁶⁹⁵²⁰ 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 69520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89280).

69520 is an abundant number, since it is smaller than the sum of its proper divisors (109040).

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

69520 is a wasteful number, since it uses less digits than its factorization.

69520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 69520 is about 263.6664559628. Note that the first 3 decimals coincide. The cubic root of 69520 is about 41.1184360511.

69520 divided by its sum of digits (22) gives a triangular number (3160 = T₇₉).

The spelling of 69520 in words is "sixty-nine thousand, five hundred twenty".