1020895 has 8 divisors (see below), whose sum is σ = 1232640. Its totient is φ = 811680.

The previous prime is 1020893. The next prime is 1020907. The reversal of 1020895 is 5980201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020895 - 2¹ = 1020893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421 + ... + 1489.

It is an arithmetic number, because the mean of its divisors is an integer number (154080).

2^1020895 is an apocalyptic number.

1020895 is a deficient number, since it is larger than the sum of its proper divisors (211745).

1020895 is a wasteful number, since it uses less digits than its factorization.

1020895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1020895 is about 1010.3934877066. The cubic root of 1020895 is about 100.6917044183.

The spelling of 1020895 in words is "one million, twenty thousand, eight hundred ninety-five".