690682 has 8 divisors (see below), whose sum is σ = 1041876. Its totient is φ = 343392.

The previous prime is 690673. The next prime is 690689. The reversal of 690682 is 286096.

It can be written as a sum of positive squares in 2 ways, for example, as 690561 + 121 = 831^2 + 11^2 .

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

It is not an unprimeable number, because it can be changed into a prime (690689) 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, 483 + ... + 1270.

2⁶⁹⁰⁶⁸² is an apocalyptic number.

690682 is a deficient number, since it is larger than the sum of its proper divisors (351194).

690682 is a wasteful number, since it uses less digits than its factorization.

690682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 690682 is about 831.0728006619. The cubic root of 690682 is about 88.3946633143.

The spelling of 690682 in words is "six hundred ninety thousand, six hundred eighty-two".