80135786 has 4 divisors (see below), whose sum is σ = 120203682. Its totient is φ = 40067892.

The previous prime is 80135777. The next prime is 80135791. The reversal of 80135786 is 68753108.

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

It can be written as a sum of positive squares in only one way, i.e., 51566761 + 28569025 = 7181^2 + 5345^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20033945 + ... + 20033948.

Almost surely, 2^80135786 is an apocalyptic number.

80135786 is a deficient number, since it is larger than the sum of its proper divisors (40067896).

80135786 is a wasteful number, since it uses less digits than its factorization.

80135786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40067895.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 80135786 is about 8951.8593599319. The cubic root of 80135786 is about 431.1305852661.

The spelling of 80135786 in words is "eighty million, one hundred thirty-five thousand, seven hundred eighty-six".