694400 has 96 divisors (see below), whose sum is σ = 2023680. Its totient is φ = 230400.

The previous prime is 694391. The next prime is 694409. The reversal of 694400 is 4496.

Added to its reverse (4496) it gives a square (698896 = 836²).

It is an interprime number because it is at equal distance from previous prime (694391) and next prime (694409).

It is a nialpdrome in base 16.

It is a congruent number.

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

694400 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 11 ways as a sum of consecutive naturals, for example, 22385 + ... + 22415.

It is an arithmetic number, because the mean of its divisors is an integer number (21080).

2⁶⁹⁴⁴⁰⁰ 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 694400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011840).

694400 is an abundant number, since it is smaller than the sum of its proper divisors (1329280).

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

694400 is a wasteful number, since it uses less digits than its factorization.

694400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 694400 is about 833.3066662400. The cubic root of 694400 is about 88.5529915541.

Adding to 694400 its reverse (4496), we get a palindrome (698896).

The spelling of 694400 in words is "six hundred ninety-four thousand, four hundred".