694240 has 24 divisors (see below), whose sum is σ = 1640520. Its totient is φ = 277632.

The previous prime is 694223. The next prime is 694259. The reversal of 694240 is 42496.

694240 = 71² + 72² + ... + 134².

694240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010 + ... + 2329.

It is an arithmetic number, because the mean of its divisors is an integer number (68355).

2⁶⁹⁴²⁴⁰ is an apocalyptic number.

It is an amenable number.

694240 is an abundant number, since it is smaller than the sum of its proper divisors (946280).

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

694240 is a wasteful number, since it uses less digits than its factorization.

694240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354 (or 4346 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 694240 is about 833.2106576371. The cubic root of 694240 is about 88.5461897266.

The spelling of 694240 in words is "six hundred ninety-four thousand, two hundred forty".