91566460 has 24 divisors (see below), whose sum is σ = 193586400. Its totient is φ = 36379584.

The previous prime is 91566383. The next prime is 91566469. The reversal of 91566460 is 6466519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91566469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12384 + ... + 18343.

It is an arithmetic number, because the mean of its divisors is an integer number (8066100).

Almost surely, 2^91566460 is an apocalyptic number.

It is an amenable number.

91566460 is an abundant number, since it is smaller than the sum of its proper divisors (102019940).

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

91566460 is a wasteful number, since it uses less digits than its factorization.

91566460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30885 (or 30883 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 91566460 is about 9569.0365241230. The cubic root of 91566460 is about 450.7255127905.

The spelling of 91566460 in words is "ninety-one million, five hundred sixty-six thousand, four hundred sixty".