80675569 has 4 divisors (see below), whose sum is σ = 86881396. Its totient is φ = 74469744.

The previous prime is 80675533. The next prime is 80675599. The reversal of 80675569 is 96557608.

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 35247969 + 45427600 = 5937^2 + 6740^2 .

It is a cyclic number.

It is not a de Polignac number, because 80675569 - 2¹¹ = 80673521 is a prime.

It is a super-2 number, since 2×80675569² = 13017094866947522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80675599) 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 3 ways as a sum of consecutive naturals, for example, 3102894 + ... + 3102919.

It is an arithmetic number, because the mean of its divisors is an integer number (21720349).

Almost surely, 2^80675569 is an apocalyptic number.

It is an amenable number.

80675569 is a deficient number, since it is larger than the sum of its proper divisors (6205827).

80675569 is a wasteful number, since it uses less digits than its factorization.

80675569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205826.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 80675569 is about 8981.9579714002. The cubic root of 80675569 is about 432.0964308765.

The spelling of 80675569 in words is "eighty million, six hundred seventy-five thousand, five hundred sixty-nine".