80998601 has 2 divisors, whose sum is σ = 80998602. Its totient is φ = 80998600.

The previous prime is 80998597. The next prime is 80998607. The reversal of 80998601 is 10689908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66406201 + 14592400 = 8149^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 80998601 - 2² = 80998597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80998607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40499300 + 40499301.

It is an arithmetic number, because the mean of its divisors is an integer number (40499301).

Almost surely, 2^80998601 is an apocalyptic number.

It is an amenable number.

80998601 is a deficient number, since it is larger than the sum of its proper divisors (1).

80998601 is an equidigital number, since it uses as much as digits as its factorization.

80998601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 80998601 is about 8999.9222774422. The cubic root of 80998601 is about 432.6723800814.

The spelling of 80998601 in words is "eighty million, nine hundred ninety-eight thousand, six hundred one".