690926 has 4 divisors (see below), whose sum is σ = 1036392. Its totient is φ = 345462.

The previous prime is 690919. The next prime is 690929. The reversal of 690926 is 629096.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 690892 and 690901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690929) 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, 172730 + ... + 172733.

It is an arithmetic number, because the mean of its divisors is an integer number (259098).

2⁶⁹⁰⁹²⁶ is an apocalyptic number.

690926 is a deficient number, since it is larger than the sum of its proper divisors (345466).

690926 is a wasteful number, since it uses less digits than its factorization.

690926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345465.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 690926 is about 831.2195859098. The cubic root of 690926 is about 88.4050712678.

The spelling of 690926 in words is "six hundred ninety thousand, nine hundred twenty-six".