80658065 has 16 divisors (see below), whose sum is σ = 98893008. Its totient is φ = 63138816.

The previous prime is 80658031. The next prime is 80658091. The reversal of 80658065 is 56085608.

It can be written as a sum of positive squares in 8 ways, for example, as 394384 + 80263681 = 628^2 + 8959^2 .

It is a cyclic number.

It is not a de Polignac number, because 80658065 - 2¹⁸ = 80395921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49199 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (6180813).

Almost surely, 2^80658065 is an apocalyptic number.

It is an amenable number.

80658065 is a deficient number, since it is larger than the sum of its proper divisors (18234943).

80658065 is a wasteful number, since it uses less digits than its factorization.

80658065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 80658065 is about 8980.9835207509. The cubic root of 80658065 is about 432.0651782801.

The spelling of 80658065 in words is "eighty million, six hundred fifty-eight thousand, sixty-five".