1690082 has 4 divisors (see below), whose sum is σ = 2535126. Its totient is φ = 845040.

The previous prime is 1690081. The next prime is 1690097. The reversal of 1690082 is 2800961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2800961 = 19 ⋅147419.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 28561 = 1289^2 + 169^2 .

It is not an unprimeable number, because it can be changed into a prime (1690081) 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 as a sum of consecutive naturals, namely, 422519 + ... + 422522.

2^1690082 is an apocalyptic number.

1690082 is a deficient number, since it is larger than the sum of its proper divisors (845044).

1690082 is an equidigital number, since it uses as much as digits as its factorization.

1690082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845043.

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

The square root of 1690082 is about 1300.0315380790. The cubic root of 1690082 is about 119.1157689846.

The spelling of 1690082 in words is "one million, six hundred ninety thousand, eighty-two".