998077 has 2 divisors, whose sum is σ = 998078. Its totient is φ = 998076.

The previous prime is 998071. The next prime is 998083. The reversal of 998077 is 770899.

It is a balanced prime because it is at equal distance from previous prime (998071) and next prime (998083).

It can be written as a sum of positive squares in only one way, i.e., 820836 + 177241 = 906^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 998077 - 2³ = 998069 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499038 + 499039.

It is an arithmetic number, because the mean of its divisors is an integer number (499039).

2⁹⁹⁸⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

998077 is a deficient number, since it is larger than the sum of its proper divisors (1).

998077 is an equidigital number, since it uses as much as digits as its factorization.

998077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 998077 is about 999.0380373139. The cubic root of 998077 is about 99.9358588679.

The spelling of 998077 in words is "nine hundred ninety-eight thousand, seventy-seven".