694221 has 16 divisors (see below), whose sum is σ = 1024320. Its totient is φ = 414720.

The previous prime is 694207. The next prime is 694223. The reversal of 694221 is 122496.

It is not a de Polignac number, because 694221 - 2⁵ = 694189 is a prime.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 694191 and 694200.

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 694221.

It is not an unprimeable number, because it can be changed into a prime (694223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3501 + ... + 3693.

It is an arithmetic number, because the mean of its divisors is an integer number (64020).

2⁶⁹⁴²²¹ is an apocalyptic number.

It is an amenable number.

694221 is a deficient number, since it is larger than the sum of its proper divisors (330099).

694221 is a wasteful number, since it uses less digits than its factorization.

694221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its digits is 864, while the sum is 24.

The square root of 694221 is about 833.1992558806. The cubic root of 694221 is about 88.5453819402.

The spelling of 694221 in words is "six hundred ninety-four thousand, two hundred twenty-one".