690696 has 48 divisors (see below), whose sum is σ = 1916460. Its totient is φ = 224640.

The previous prime is 690689. The next prime is 690719. The reversal of 690696 is 696096.

It can be written as a sum of positive squares in 2 ways, for example, as 656100 + 34596 = 810^2 + 186^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 690696.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3726 + ... + 3906.

2⁶⁹⁰⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958230).

690696 is an abundant number, since it is smaller than the sum of its proper divisors (1225764).

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

690696 is a wasteful number, since it uses less digits than its factorization.

690696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 690696 is about 831.0812234674. The cubic root of 690696 is about 88.3952605582.

It can be divided in two parts, 69069 and 6, that multiplied together give a palindrome (414414).

The spelling of 690696 in words is "six hundred ninety thousand, six hundred ninety-six".