69485805 has 12 divisors (see below), whose sum is σ = 120442140. Its totient is φ = 37059072.

The previous prime is 69485803. The next prime is 69485813. The reversal of 69485805 is 50858496.

69485805 is a `hidden beast` number, since 69 + 4 + 8 + 580 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44595684 + 24890121 = 6678^2 + 4989^2 .

It is not a de Polignac number, because 69485805 - 2¹ = 69485803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1544129 = 69485805 / (6 + 9 + 4 + 8 + 5 + 8 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69485803) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 772020 + ... + 772109.

It is an arithmetic number, because the mean of its divisors is an integer number (10036845).

Almost surely, 2^69485805 is an apocalyptic number.

It is an amenable number.

69485805 is a deficient number, since it is larger than the sum of its proper divisors (50956335).

69485805 is a wasteful number, since it uses less digits than its factorization.

69485805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544140 (or 1544137 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 69485805 is about 8335.8145972664. The cubic root of 69485805 is about 411.1169326476.

The spelling of 69485805 in words is "sixty-nine million, four hundred eighty-five thousand, eight hundred five".