80020997 has 4 divisors (see below), whose sum is σ = 91452576. Its totient is φ = 68589420.

The previous prime is 80020991. The next prime is 80020999. The reversal of 80020997 is 79902008.

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 not a de Polignac number, because 80020997 - 2¹² = 80016901 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 (80020991) 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, 5715779 + ... + 5715792.

It is an arithmetic number, because the mean of its divisors is an integer number (22863144).

Almost surely, 2^80020997 is an apocalyptic number.

It is an amenable number.

80020997 is a deficient number, since it is larger than the sum of its proper divisors (11431579).

80020997 is a wasteful number, since it uses less digits than its factorization.

80020997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431578.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 80020997 is about 8945.4456009748. The cubic root of 80020997 is about 430.9246319298.

The spelling of 80020997 in words is "eighty million, twenty thousand, nine hundred ninety-seven".