693966 has 64 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 172800.

The previous prime is 693961. The next prime is 693967. The reversal of 693966 is 669396.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 693966.

It is not an unprimeable number, because it can be changed into a prime (693961) by changing a digit.

693966 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 31 ways as a sum of consecutive naturals, for example, 16906 + ... + 16946.

It is an arithmetic number, because the mean of its divisors is an integer number (28224).

2⁶⁹³⁹⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 693966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903168).

693966 is an abundant number, since it is smaller than the sum of its proper divisors (1112370).

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

693966 is a wasteful number, since it uses less digits than its factorization.

693966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97.

The product of its digits is 52488, while the sum is 39.

The square root of 693966 is about 833.0462172053. The cubic root of 693966 is about 88.5345391694.

The spelling of 693966 in words is "six hundred ninety-three thousand, nine hundred sixty-six".