1020797 has 2 divisors, whose sum is σ = 1020798. Its totient is φ = 1020796.

The previous prime is 1020779. The next prime is 1020821. The reversal of 1020797 is 7970201.

Together with previous prime (1020779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 32761 = 994^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020797 - 2⁸ = 1020541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510398 + 510399.

It is an arithmetic number, because the mean of its divisors is an integer number (510399).

2^1020797 is an apocalyptic number.

It is an amenable number.

1020797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020797 is an equidigital number, since it uses as much as digits as its factorization.

1020797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 1020797 is about 1010.3449905849. The cubic root of 1020797 is about 100.6884823753.

Adding to 1020797 its reverse (7970201), we get a palindrome (8990998).

The spelling of 1020797 in words is "one million, twenty thousand, seven hundred ninety-seven".