69040 has 20 divisors (see below), whose sum is σ = 160704. Its totient is φ = 27584.

The previous prime is 69031. The next prime is 69061. The reversal of 69040 is 4096.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68999 and 69017.

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 3 ways as a sum of consecutive naturals, for example, 352 + ... + 511.

2⁶⁹⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

69040 is an abundant number, since it is smaller than the sum of its proper divisors (91664).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80352).

69040 is a wasteful number, since it uses less digits than its factorization.

69040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 69040 is about 262.7546383986. The cubic root of 69040 is about 41.0235834972.

The spelling of 69040 in words is "sixty-nine thousand, forty".