1020775 has 24 divisors (see below), whose sum is σ = 1527680. Its totient is φ = 660960.

The previous prime is 1020757. The next prime is 1020779. The reversal of 1020775 is 5770201.

It is not a de Polignac number, because 1020775 - 2⁵ = 1020743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3172 + ... + 3478.

2^1020775 is an apocalyptic number.

1020775 is a deficient number, since it is larger than the sum of its proper divisors (506905).

1020775 is a wasteful number, since it uses less digits than its factorization.

1020775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 1020775 is about 1010.3341031560. The cubic root of 1020775 is about 100.6877590312.

Adding to 1020775 its reverse (5770201), we get a palindrome (6790976).

The spelling of 1020775 in words is "one million, twenty thousand, seven hundred seventy-five".