91356673 has 8 divisors (see below), whose sum is σ = 93824640. Its totient is φ = 88910640.

The previous prime is 91356647. The next prime is 91356677. The reversal of 91356673 is 37665319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91356673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91356677) 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, 3138 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (11728080).

Almost surely, 2^91356673 is an apocalyptic number.

It is an amenable number.

91356673 is a deficient number, since it is larger than the sum of its proper divisors (2467967).

91356673 is a wasteful number, since it uses less digits than its factorization.

91356673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10967.

The product of its digits is 102060, while the sum is 40.

The square root of 91356673 is about 9558.0684764235. The cubic root of 91356673 is about 450.3810320072.

It can be divided in two parts, 91356 and 673, that added together give a palindrome (92029).

The spelling of 91356673 in words is "ninety-one million, three hundred fifty-six thousand, six hundred seventy-three".