69042805 has 8 divisors (see below), whose sum is σ = 89224632. Its totient is φ = 50985408.

The previous prime is 69042781. The next prime is 69042817. The reversal of 69042805 is 50824096.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 848241 + 68194564 = 921^2 + 8258^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69042805 - 2⁵ = 69042773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531034 + ... + 531163.

It is an arithmetic number, because the mean of its divisors is an integer number (11153079).

Almost surely, 2^69042805 is an apocalyptic number.

69042805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69042805 is a deficient number, since it is larger than the sum of its proper divisors (20181827).

69042805 is a wasteful number, since it uses less digits than its factorization.

69042805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062215.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 69042805 is about 8309.2000216627. The cubic root of 69042805 is about 410.2413906693.

The spelling of 69042805 in words is "sixty-nine million, forty-two thousand, eight hundred five".