80566901 has 8 divisors (see below), whose sum is σ = 83811000. Its totient is φ = 77353920.

The previous prime is 80566891. The next prime is 80566921. The reversal of 80566901 is 10966508.

It can be written as a sum of positive squares in 4 ways, for example, as 34225 + 80532676 = 185^2 + 8974^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80566901 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 (80566921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (10476375).

Almost surely, 2^80566901 is an apocalyptic number.

It is an amenable number.

80566901 is a deficient number, since it is larger than the sum of its proper divisors (3244099).

80566901 is a wasteful number, since it uses less digits than its factorization.

80566901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15559.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 80566901 is about 8975.9066951479. The cubic root of 80566901 is about 431.9023359613.

The spelling of 80566901 in words is "eighty million, five hundred sixty-six thousand, nine hundred one".