69910985 has 4 divisors (see below), whose sum is σ = 83893188. Its totient is φ = 55928784.

The previous prime is 69910943. The next prime is 69910999. The reversal of 69910985 is 58901996.

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 11587216 + 58323769 = 3404^2 + 7637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69910985 is a prime.

It is a Duffinian 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, 6991094 + ... + 6991103.

It is an arithmetic number, because the mean of its divisors is an integer number (20973297).

Almost surely, 2^69910985 is an apocalyptic number.

It is an amenable number.

69910985 is a deficient number, since it is larger than the sum of its proper divisors (13982203).

69910985 is a wasteful number, since it uses less digits than its factorization.

69910985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13982202.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 69910985 is about 8361.2789093535. The cubic root of 69910985 is about 411.9537624455.

The spelling of 69910985 in words is "sixty-nine million, nine hundred ten thousand, nine hundred eighty-five".