1020998 has 12 divisors (see below), whose sum is σ = 1683780. Its totient is φ = 463980.

The previous prime is 1020997. The next prime is 1021001. The reversal of 1020998 is 8990201.

1020998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1868 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (140315).

2^1020998 is an apocalyptic number.

1020998 is a deficient number, since it is larger than the sum of its proper divisors (662782).

1020998 is a wasteful number, since it uses less digits than its factorization.

1020998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1020998 is about 1010.4444566625. Note that the first 4 decimals coincide. The cubic root of 1020998 is about 100.6950906291.

The spelling of 1020998 in words is "one million, twenty thousand, nine hundred ninety-eight".