80582749 has 12 divisors (see below), whose sum is σ = 88140852. Its totient is φ = 73632000.

The previous prime is 80582717. The next prime is 80582759. The reversal of 80582749 is 94728508.

It can be written as a sum of positive squares in 6 ways, for example, as 480249 + 80102500 = 693^2 + 8950^2 .

It is not a de Polignac number, because 80582749 - 2⁵ = 80582717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80582759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14709 + ... + 19429.

It is an arithmetic number, because the mean of its divisors is an integer number (7345071).

Almost surely, 2^80582749 is an apocalyptic number.

It is an amenable number.

80582749 is a deficient number, since it is larger than the sum of its proper divisors (7558103).

80582749 is a wasteful number, since it uses less digits than its factorization.

80582749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 80582749 is about 8976.7894594894. The cubic root of 80582749 is about 431.9306533778.

The spelling of 80582749 in words is "eighty million, five hundred eighty-two thousand, seven hundred forty-nine".