906181 has 4 divisors (see below), whose sum is σ = 921600. Its totient is φ = 890764.

The previous prime is 906179. The next prime is 906187. The reversal of 906181 is 181609.

906181 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 906181 - 2¹ = 906179 is a prime.

It is a super-2 number, since 2×906181² = 1642328009522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906187) 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, 7621 + ... + 7738.

It is an arithmetic number, because the mean of its divisors is an integer number (230400).

2⁹⁰⁶¹⁸¹ is an apocalyptic number.

It is an amenable number.

906181 is a deficient number, since it is larger than the sum of its proper divisors (15419).

906181 is a wasteful number, since it uses less digits than its factorization.

906181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15418.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 906181 is about 951.9353969677. The cubic root of 906181 is about 96.7694599489.

The spelling of 906181 in words is "nine hundred six thousand, one hundred eighty-one".