1690036 has 12 divisors (see below), whose sum is σ = 2967300. Its totient is φ = 842240.

The previous prime is 1690019. The next prime is 1690043. The reversal of 1690036 is 6300961.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 649636 = 1020^2 + 806^2 .

It is a congruent number.

It is an unprimeable number.

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, 1326 + ... + 2266.

It is an arithmetic number, because the mean of its divisors is an integer number (247275).

2^1690036 is an apocalyptic number.

It is an amenable number.

1690036 is a deficient number, since it is larger than the sum of its proper divisors (1277264).

1690036 is a wasteful number, since it uses less digits than its factorization.

1690036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1690036 is about 1300.0138460801. The cubic root of 1690036 is about 119.1146882924.

Adding to 1690036 its reverse (6300961), we get a palindrome (7990997).

It can be divided in two parts, 16900 and 36, that multiplied together give a square (608400 = 780²).

The spelling of 1690036 in words is "one million, six hundred ninety thousand, thirty-six".