1690968 has 16 divisors (see below), whose sum is σ = 4227480. Its totient is φ = 563648.

The previous prime is 1690967. The next prime is 1690993. The reversal of 1690968 is 8690961.

1690968 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690967) 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, 35205 + ... + 35252.

2^1690968 is an apocalyptic number.

It is an amenable number.

1690968 is an abundant number, since it is smaller than the sum of its proper divisors (2536512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690968 is a wasteful number, since it uses less digits than its factorization.

1690968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70466 (or 70462 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1690968 is about 1300.3722543949. The cubic root of 1690968 is about 119.1365802301.

The spelling of 1690968 in words is "one million, six hundred ninety thousand, nine hundred sixty-eight".