690896 has 20 divisors (see below), whose sum is σ = 1385700. Its totient is φ = 333312.

The previous prime is 690889. The next prime is 690919. The reversal of 690896 is 698096.

690896 = T₈₀ + T₈₁ + ... + T₁₆₆.

It can be written as a sum of positive squares in 2 ways, for example, as 250000 + 440896 = 500^2 + 664^2 .

It is a congruent number.

It is an unprimeable number.

690896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 1208.

It is an arithmetic number, because the mean of its divisors is an integer number (69285).

2⁶⁹⁰⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

690896 is an abundant number, since it is smaller than the sum of its proper divisors (694804).

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

690896 is a wasteful number, since it uses less digits than its factorization.

690896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 690896 is about 831.2015399408. The cubic root of 690896 is about 88.4037917335.

The spelling of 690896 in words is "six hundred ninety thousand, eight hundred ninety-six".