69090885 has 12 divisors (see below), whose sum is σ = 119757612. Its totient is φ = 36848448.

The previous prime is 69090883. The next prime is 69090887. The reversal of 69090885 is 58809096.

It is an interprime number because it is at equal distance from previous prime (69090883) and next prime (69090887).

It can be written as a sum of positive squares in 2 ways, for example, as 51926436 + 17164449 = 7206^2 + 4143^2 .

It is not a de Polignac number, because 69090885 - 2¹ = 69090883 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: 1535353 = 69090885 / (6 + 9 + 0 + 9 + 0 + 8 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 69090885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69090883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767632 + ... + 767721.

It is an arithmetic number, because the mean of its divisors is an integer number (9979801).

Almost surely, 2^69090885 is an apocalyptic number.

It is an amenable number.

69090885 is a deficient number, since it is larger than the sum of its proper divisors (50666727).

69090885 is a wasteful number, since it uses less digits than its factorization.

69090885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535364 (or 1535361 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 69090885 is about 8312.0926967882. The cubic root of 69090885 is about 410.3365964829.

The spelling of 69090885 in words is "sixty-nine million, ninety thousand, eight hundred eighty-five".