69428005 has 4 divisors (see below), whose sum is σ = 83313612. Its totient is φ = 55542400.

The previous prime is 69427999. The next prime is 69428011. The reversal of 69428005 is 50082496.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (69427999) and next prime (69428011).

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 54420129 = 3874^2 + 7377^2 .

It is not a de Polignac number, because 69428005 - 2⁵ = 69427973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6942796 + ... + 6942805.

It is an arithmetic number, because the mean of its divisors is an integer number (20828403).

Almost surely, 2^69428005 is an apocalyptic number.

It is an amenable number.

69428005 is a deficient number, since it is larger than the sum of its proper divisors (13885607).

69428005 is a wasteful number, since it uses less digits than its factorization.

69428005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13885606.

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

The square root of 69428005 is about 8332.3469082846. The cubic root of 69428005 is about 411.0029086369.

The spelling of 69428005 in words is "sixty-nine million, four hundred twenty-eight thousand, five".