80066257 has 4 divisors (see below), whose sum is σ = 80468800. Its totient is φ = 79663716.

The previous prime is 80066219. The next prime is 80066293. The reversal of 80066257 is 75266008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80066257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80063257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200973 + ... + 201370.

It is an arithmetic number, because the mean of its divisors is an integer number (20117200).

Almost surely, 2^80066257 is an apocalyptic number.

It is an amenable number.

80066257 is a deficient number, since it is larger than the sum of its proper divisors (402543).

80066257 is a wasteful number, since it uses less digits than its factorization.

80066257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402542.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 80066257 is about 8947.9750223165. The cubic root of 80066257 is about 431.0058604974.

The spelling of 80066257 in words is "eighty million, sixty-six thousand, two hundred fifty-seven".