91672097 has 8 divisors (see below), whose sum is σ = 100770912. Its totient is φ = 82700800.

The previous prime is 91672079. The next prime is 91672099. The reversal of 91672097 is 79027619.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91672097 - 2⁸ = 91671841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91672099) 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, 30368 + ... + 33249.

It is an arithmetic number, because the mean of its divisors is an integer number (12596364).

Almost surely, 2^91672097 is an apocalyptic number.

It is an amenable number.

91672097 is a deficient number, since it is larger than the sum of its proper divisors (9098815).

91672097 is a wasteful number, since it uses less digits than its factorization.

91672097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63759.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 91672097 is about 9574.5546632729. The cubic root of 91672097 is about 450.8987748954.

The spelling of 91672097 in words is "ninety-one million, six hundred seventy-two thousand, ninety-seven".