635091 has 8 divisors (see below), whose sum is σ = 853440. Its totient is φ = 420072.

The previous prime is 635087. The next prime is 635119. The reversal of 635091 is 190536.

635091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 635091 - 2² = 635087 is a prime.

635091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (635021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (106680).

2⁶³⁵⁰⁹¹ is an apocalyptic number.

635091 is a deficient number, since it is larger than the sum of its proper divisors (218349).

635091 is a wasteful number, since it uses less digits than its factorization.

635091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 635091 is about 796.9259689582. The cubic root of 635091 is about 85.9564860090.

It can be divided in two parts, 6350 and 91, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 635091 in words is "six hundred thirty-five thousand, ninety-one".