634091 has 2 divisors, whose sum is σ = 634092. Its totient is φ = 634090.

The previous prime is 634079. The next prime is 634097. The reversal of 634091 is 190436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634091 - 2¹⁰ = 633067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317045 + 317046.

It is an arithmetic number, because the mean of its divisors is an integer number (317046).

2⁶³⁴⁰⁹¹ is an apocalyptic number.

634091 is a deficient number, since it is larger than the sum of its proper divisors (1).

634091 is an equidigital number, since it uses as much as digits as its factorization.

634091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 634091 is about 796.2983109363. The cubic root of 634091 is about 85.9113472596.

The spelling of 634091 in words is "six hundred thirty-four thousand, ninety-one".