694398253 has 2 divisors, whose sum is σ = 694398254. Its totient is φ = 694398252.

The previous prime is 694398227. The next prime is 694398311. The reversal of 694398253 is 352893496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353552809 + 340845444 = 18803^2 + 18462^2 .

It is a cyclic number.

It is not a de Polignac number, because 694398253 - 2⁹ = 694397741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 694398197 and 694398206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694398053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347199126 + 347199127.

It is an arithmetic number, because the mean of its divisors is an integer number (347199127).

Almost surely, 2^694398253 is an apocalyptic number.

It is an amenable number.

694398253 is a deficient number, since it is larger than the sum of its proper divisors (1).

694398253 is an equidigital number, since it uses as much as digits as its factorization.

694398253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 694398253 is about 26351.4373991249. The cubic root of 694398253 is about 885.5291729231.

The spelling of 694398253 in words is "six hundred ninety-four million, three hundred ninety-eight thousand, two hundred fifty-three".