90634 has 4 divisors (see below), whose sum is σ = 135954. Its totient is φ = 45316.

The previous prime is 90631. The next prime is 90641. The reversal of 90634 is 43609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 9409 = 285^2 + 97^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22657 + ... + 22660.

2⁹⁰⁶³⁴ is an apocalyptic number.

90634 is a deficient number, since it is larger than the sum of its proper divisors (45320).

90634 is a wasteful number, since it uses less digits than its factorization.

90634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45319.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90634 is about 301.0548122851. The cubic root of 90634 is about 44.9190313550.

The spelling of 90634 in words is "ninety thousand, six hundred thirty-four".