1020686 has 8 divisors (see below), whose sum is σ = 1552224. Its totient is φ = 503280.

The previous prime is 1020683. The next prime is 1020689. The reversal of 1020686 is 6860201.

It is an interprime number because it is at equal distance from previous prime (1020683) and next prime (1020689).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020683) 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, 3350 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (194028).

2^1020686 is an apocalyptic number.

1020686 is a deficient number, since it is larger than the sum of its proper divisors (531538).

1020686 is an equidigital number, since it uses as much as digits as its factorization.

1020686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1020686 is about 1010.2900573598. The cubic root of 1020686 is about 100.6848326694.

Adding to 1020686 its reverse (6860201), we get a palindrome (7880887).

The spelling of 1020686 in words is "one million, twenty thousand, six hundred eighty-six".