694144 has 64 divisors (see below), whose sum is σ = 1652400. Its totient is φ = 286720.

The previous prime is 694123. The next prime is 694189. The reversal of 694144 is 441496.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23922 + ... + 23950.

2⁶⁹⁴¹⁴⁴ is an apocalyptic number.

694144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 694144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826200).

694144 is an abundant number, since it is smaller than the sum of its proper divisors (958256).

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

694144 is a wasteful number, since it uses less digits than its factorization.

694144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 59 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 694144 is about 833.1530471648. The cubic root of 694144 is about 88.5421081285.

It can be divided in two parts, 694 and 144, that added together give a palindrome (838).

The spelling of 694144 in words is "six hundred ninety-four thousand, one hundred forty-four".