91723045 has 8 divisors (see below), whose sum is σ = 111136896. Its totient is φ = 72665616.

The previous prime is 91723033. The next prime is 91723061. The reversal of 91723045 is 54032719.

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-91723045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91722998 and 91723016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88537 + ... + 89566.

It is an arithmetic number, because the mean of its divisors is an integer number (13892112).

Almost surely, 2^91723045 is an apocalyptic number.

It is an amenable number.

91723045 is a deficient number, since it is larger than the sum of its proper divisors (19413851).

91723045 is a wasteful number, since it uses less digits than its factorization.

91723045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178211.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 91723045 is about 9577.2148874294. The cubic root of 91723045 is about 450.9822904438.

The spelling of 91723045 in words is "ninety-one million, seven hundred twenty-three thousand, forty-five".