91069 has 8 divisors (see below), whose sum is σ = 105408. Its totient is φ = 77760.

The previous prime is 91033. The next prime is 91079. The reversal of 91069 is 96019.

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

It is a cyclic number.

It is not a de Polignac number, because 91069 - 2¹¹ = 89021 is a prime.

It is a super-2 number, since 2×91069² = 16587125522, 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 (91009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 430.

It is an arithmetic number, because the mean of its divisors is an integer number (13176).

2⁹¹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

91069 is a deficient number, since it is larger than the sum of its proper divisors (14339).

91069 is a wasteful number, since it uses less digits than its factorization.

91069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 91069 is about 301.7764072952. The cubic root of 91069 is about 44.9907800041.

Subtracting 91069 from its reverse (96019), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 910 and 69, that added together give a palindrome (979).

The spelling of 91069 in words is "ninety-one thousand, sixty-nine".