91066842 has 40 divisors (see below), whose sum is σ = 209586036. Its totient is φ = 29533248.

The previous prime is 91066817. The next prime is 91066849. The reversal of 91066842 is 24866019.

It can be written as a sum of positive squares in 2 ways, for example, as 65755881 + 25310961 = 8109^2 + 5031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91066797 and 91066806.

It is not an unprimeable number, because it can be changed into a prime (91066849) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1603 + ... + 13590.

Almost surely, 2^91066842 is an apocalyptic number.

91066842 is an abundant number, since it is smaller than the sum of its proper divisors (118519194).

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

91066842 is a wasteful number, since it uses less digits than its factorization.

91066842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15244 (or 15235 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 91066842 is about 9542.8948438092. The cubic root of 91066842 is about 449.9042462931.

The spelling of 91066842 in words is "ninety-one million, sixty-six thousand, eight hundred forty-two".