1022681 has 8 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 923440.

The previous prime is 1022677. The next prime is 1022683. The reversal of 1022681 is 1862201.

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

It is a cyclic number.

It is not a de Polignac number, because 1022681 - 2² = 1022677 is a prime.

It is a super-2 number, since 2×1022681² = 2091752855522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1022683) 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 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 2823.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2^1022681 is an apocalyptic number.

1022681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022681 is a deficient number, since it is larger than the sum of its proper divisors (100519).

1022681 is a wasteful number, since it uses less digits than its factorization.

1022681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1022681 is about 1011.2769155874. The cubic root of 1022681 is about 100.7503884211.

Adding to 1022681 its reverse (1862201), we get a palindrome (2884882).

The spelling of 1022681 in words is "one million, twenty-two thousand, six hundred eighty-one".