690938 has 8 divisors (see below), whose sum is σ = 1064532. Its totient is φ = 336096.

The previous prime is 690929. The next prime is 690953. The reversal of 690938 is 839096.

It can be written as a sum of positive squares in 2 ways, for example, as 528529 + 162409 = 727^2 + 403^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 690898 and 690907.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690938.

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, 4595 + ... + 4742.

2⁶⁹⁰⁹³⁸ is an apocalyptic number.

690938 is a deficient number, since it is larger than the sum of its proper divisors (373594).

690938 is a wasteful number, since it uses less digits than its factorization.

690938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9376.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 690938 is about 831.2268041876. The cubic root of 690938 is about 88.4055830711.

The spelling of 690938 in words is "six hundred ninety thousand, nine hundred thirty-eight".