694421 has 12 divisors (see below), whose sum is σ = 860832. Its totient is φ = 548496.

The previous prime is 694409. The next prime is 694427. The reversal of 694421 is 124496.

694421 = T₂₁₈ + T₂₁₉ + ... + T₂₄₃.

It is not a de Polignac number, because 694421 - 2⁶ = 694357 is a prime.

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 694421.

It is not an unprimeable number, because it can be changed into a prime (694427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (71736).

2⁶⁹⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

694421 is a deficient number, since it is larger than the sum of its proper divisors (166411).

694421 is a wasteful number, since it uses less digits than its factorization.

694421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 607 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 694421 is about 833.3192665479. The cubic root of 694421 is about 88.5538842164.

The spelling of 694421 in words is "six hundred ninety-four thousand, four hundred twenty-one".