69930785 has 4 divisors (see below), whose sum is σ = 83916948. Its totient is φ = 55944624.

The previous prime is 69930779. The next prime is 69930829. The reversal of 69930785 is 58703996.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10316944 + 59613841 = 3212^2 + 7721^2 .

It is a cyclic number.

It is not a de Polignac number, because 69930785 - 2⁸ = 69930529 is a prime.

It is a Duffinian number.

It is a Curzon 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, 6993074 + ... + 6993083.

It is an arithmetic number, because the mean of its divisors is an integer number (20979237).

Almost surely, 2^69930785 is an apocalyptic number.

It is an amenable number.

69930785 is a deficient number, since it is larger than the sum of its proper divisors (13986163).

69930785 is a wasteful number, since it uses less digits than its factorization.

69930785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13986162.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 69930785 is about 8362.4628549250. The cubic root of 69930785 is about 411.9926495845.

The spelling of 69930785 in words is "sixty-nine million, nine hundred thirty thousand, seven hundred eighty-five".