690996 has 24 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 227392.

The previous prime is 690953. The next prime is 690997. The reversal of 690996 is 699096.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690996.

It is not an unprimeable number, because it can be changed into a prime (690997) by changing a digit.

690996 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 7 ways as a sum of consecutive naturals, for example, 745 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2⁶⁹⁰⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

690996 is an abundant number, since it is smaller than the sum of its proper divisors (941964).

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

690996 is a wasteful number, since it uses less digits than its factorization.

690996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 690996 is about 831.2616916471. The cubic root of 690996 is about 88.4080567038.

Subtracting 690996 from its reverse (699096), we obtain a square (8100 = 90²).

The spelling of 690996 in words is "six hundred ninety thousand, nine hundred ninety-six".