91506793 has 32 divisors (see below), whose sum is σ = 114589440. Its totient is φ = 71331840.

The previous prime is 91506787. The next prime is 91506829. The reversal of 91506793 is 39760519.

It is a cyclic number.

It is not a de Polignac number, because 91506793 - 2¹⁷ = 91375721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91506713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528855 + ... + 529027.

It is an arithmetic number, because the mean of its divisors is an integer number (3580920).

Almost surely, 2^91506793 is an apocalyptic number.

It is an amenable number.

91506793 is a deficient number, since it is larger than the sum of its proper divisors (23082647).

91506793 is a wasteful number, since it uses less digits than its factorization.

91506793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 91506793 is about 9565.9183040626. The cubic root of 91506793 is about 450.6275901713.

The spelling of 91506793 in words is "ninety-one million, five hundred six thousand, seven hundred ninety-three".