80816774 has 4 divisors (see below), whose sum is σ = 121225164. Its totient is φ = 40408386.

The previous prime is 80816731. The next prime is 80816789. The reversal of 80816774 is 47761808.

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

It is a congruent 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 as a sum of consecutive naturals, namely, 20204192 + ... + 20204195.

It is an arithmetic number, because the mean of its divisors is an integer number (30306291).

Almost surely, 2^80816774 is an apocalyptic number.

80816774 is a deficient number, since it is larger than the sum of its proper divisors (40408390).

80816774 is a wasteful number, since it uses less digits than its factorization.

80816774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40408389.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 80816774 is about 8989.8150147820. The cubic root of 80816774 is about 432.3483808143.

The spelling of 80816774 in words is "eighty million, eight hundred sixteen thousand, seven hundred seventy-four".