1012817 has 8 divisors (see below), whose sum is σ = 1099560. Its totient is φ = 932880.

The previous prime is 1012811. The next prime is 1012829. The reversal of 1012817 is 7182101.

It can be written as a sum of positive squares in 4 ways, for example, as 398161 + 614656 = 631^2 + 784^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1012817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 2427.

It is an arithmetic number, because the mean of its divisors is an integer number (137445).

2^1012817 is an apocalyptic number.

It is an amenable number.

1012817 is a deficient number, since it is larger than the sum of its proper divisors (86743).

1012817 is an frugal number, since it uses more digits than its factorization.

1012817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1012817 is about 1006.3880961140. The cubic root of 1012817 is about 100.4254209371.

Adding to 1012817 its reverse (7182101), we get a palindrome (8194918).

The spelling of 1012817 in words is "one million, twelve thousand, eight hundred seventeen".