1000690 has 8 divisors (see below), whose sum is σ = 1801260. Its totient is φ = 400272.

The previous prime is 1000679. The next prime is 1000691. The reversal of 1000690 is 960001.

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 14641 = 993^2 + 121^2 .

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

It is a super-2 number, since 2×1000690² = 2002760952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000691) 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, 50025 + ... + 50044.

2^1000690 is an apocalyptic number.

1000690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000690 is a deficient number, since it is larger than the sum of its proper divisors (800570).

1000690 is a wasteful number, since it uses less digits than its factorization.

1000690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100076.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1000690 is about 1000.3449405080. The cubic root of 1000690 is about 100.0229947120.

Adding to 1000690 its reverse (960001), we get a palindrome (1960691).

The spelling of 1000690 in words is "one million, six hundred ninety", and thus it is an aban number.