1020986 has 8 divisors (see below), whose sum is σ = 1621620. Its totient is φ = 480448.

The previous prime is 1020979. The next prime is 1020989. The reversal of 1020986 is 6890201.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 219961 = 895^2 + 469^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1020989) 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 3 ways as a sum of consecutive naturals, for example, 14981 + ... + 15048.

2^1020986 is an apocalyptic number.

1020986 is a deficient number, since it is larger than the sum of its proper divisors (600634).

1020986 is a wasteful number, since it uses less digits than its factorization.

1020986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30048.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1020986 is about 1010.4385186641. The cubic root of 1020986 is about 100.6946961308.

The spelling of 1020986 in words is "one million, twenty thousand, nine hundred eighty-six".