694261 has 2 divisors, whose sum is σ = 694262. Its totient is φ = 694260.

The previous prime is 694259. The next prime is 694271. The reversal of 694261 is 162496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 93636 = 775^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 694261 - 2¹ = 694259 is a prime.

It is a super-2 number, since 2×694261² = 963996672242, which contains 22 as substring.

Together with 694259, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347130 + 347131.

It is an arithmetic number, because the mean of its divisors is an integer number (347131).

2⁶⁹⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

694261 is a deficient number, since it is larger than the sum of its proper divisors (1).

694261 is an equidigital number, since it uses as much as digits as its factorization.

694261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 694261 is about 833.2232593969. The cubic root of 694261 is about 88.5470825261.

The spelling of 694261 in words is "six hundred ninety-four thousand, two hundred sixty-one".