91069536 has 48 divisors (see below), whose sum is σ = 240033024. Its totient is φ = 30232704.

The previous prime is 91069513. The next prime is 91069553. The reversal of 91069536 is 63596019.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 91069494 and 91069503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23445 + ... + 27051.

It is an arithmetic number, because the mean of its divisors is an integer number (5000688).

Almost surely, 2^91069536 is an apocalyptic number.

91069536 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91069536 is an abundant number, since it is smaller than the sum of its proper divisors (148963488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91069536 is a wasteful number, since it uses less digits than its factorization.

91069536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 91069536 is about 9543.0359949023. The cubic root of 91069536 is about 449.9086827050.

The spelling of 91069536 in words is "ninety-one million, sixty-nine thousand, five hundred thirty-six".