694408 has 32 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 290880.

The previous prime is 694391. The next prime is 694409. The reversal of 694408 is 804496.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 694408.

It is not an unprimeable number, because it can be changed into a prime (694409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2⁶⁹⁴⁴⁰⁸ 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 694408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766080).

694408 is an abundant number, since it is smaller than the sum of its proper divisors (837752).

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

694408 is a wasteful number, since it uses less digits than its factorization.

694408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 694408 is about 833.3114663798. The cubic root of 694408 is about 88.5533316181.

The spelling of 694408 in words is "six hundred ninety-four thousand, four hundred eight".