694222493 has 2 divisors, whose sum is σ = 694222494. Its totient is φ = 694222492.

The previous prime is 694222471. The next prime is 694222499. The reversal of 694222493 is 394222496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 485188729 + 209033764 = 22027^2 + 14458^2 .

It is a cyclic number.

It is not a de Polignac number, because 694222493 - 2¹² = 694218397 is a prime.

It is a super-3 number, since 3×694222493³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 694222493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694222499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347111246 + 347111247.

It is an arithmetic number, because the mean of its divisors is an integer number (347111247).

Almost surely, 2^694222493 is an apocalyptic number.

It is an amenable number.

694222493 is a deficient number, since it is larger than the sum of its proper divisors (1).

694222493 is an equidigital number, since it uses as much as digits as its factorization.

694222493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 694222493 is about 26348.1022656282. The cubic root of 694222493 is about 885.4544541576.

The spelling of 694222493 in words is "six hundred ninety-four million, two hundred twenty-two thousand, four hundred ninety-three".