91073673 has 16 divisors (see below), whose sum is σ = 135170560. Its totient is φ = 60604848.

The previous prime is 91073603. The next prime is 91073677. The reversal of 91073673 is 37637019.

It is not a de Polignac number, because 91073673 - 2¹⁰ = 91072649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91073677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13611 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (8448160).

Almost surely, 2^91073673 is an apocalyptic number.

It is an amenable number.

91073673 is a deficient number, since it is larger than the sum of its proper divisors (44096887).

91073673 is a wasteful number, since it uses less digits than its factorization.

91073673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 91073673 is about 9543.2527473603. The cubic root of 91073673 is about 449.9154952431.

The spelling of 91073673 in words is "ninety-one million, seventy-three thousand, six hundred seventy-three".