694091 has 2 divisors, whose sum is σ = 694092. Its totient is φ = 694090.

The previous prime is 694087. The next prime is 694123. The reversal of 694091 is 190496.

694091 = T₄₇₈ + T₄₇₉ + ... + T₄₈₃.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 694091 - 2² = 694087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 694091.

It is not a weakly prime, because it can be changed into another prime (694061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347045 + 347046.

It is an arithmetic number, because the mean of its divisors is an integer number (347046).

2⁶⁹⁴⁰⁹¹ is an apocalyptic number.

694091 is a deficient number, since it is larger than the sum of its proper divisors (1).

694091 is an equidigital number, since it uses as much as digits as its factorization.

694091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 694091 is about 833.1212396764. The cubic root of 694091 is about 88.5398545850.

The spelling of 694091 in words is "six hundred ninety-four thousand, ninety-one".