91366540 has 12 divisors (see below), whose sum is σ = 191869776. Its totient is φ = 36546608.

The previous prime is 91366537. The next prime is 91366547. The reversal of 91366540 is 4566319.

It is a junction number, because it is equal to n+sod(n) for n = 91366496 and 91366505.

It is not an unprimeable number, because it can be changed into a prime (91366547) 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 3 ways as a sum of consecutive naturals, for example, 2284144 + ... + 2284183.

It is an arithmetic number, because the mean of its divisors is an integer number (15989148).

Almost surely, 2^91366540 is an apocalyptic number.

It is an amenable number.

91366540 is an abundant number, since it is smaller than the sum of its proper divisors (100503236).

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

91366540 is a wasteful number, since it uses less digits than its factorization.

91366540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568336 (or 4568334 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 91366540 is about 9558.5846232588. The cubic root of 91366540 is about 450.3972459283.

The spelling of 91366540 in words is "ninety-one million, three hundred sixty-six thousand, five hundred forty".