90671 has 4 divisors (see below), whose sum is σ = 103632. Its totient is φ = 77712.

The previous prime is 90659. The next prime is 90677. The reversal of 90671 is 17609.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90671 - 2¹⁴ = 74287 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6470 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (25908).

2⁹⁰⁶⁷¹ is an apocalyptic number.

90671 is a deficient number, since it is larger than the sum of its proper divisors (12961).

90671 is a wasteful number, since it uses less digits than its factorization.

90671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12960.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 90671 is about 301.1162566186. The cubic root of 90671 is about 44.9251430351.

The spelling of 90671 in words is "ninety thousand, six hundred seventy-one".