91672498 has 4 divisors (see below), whose sum is σ = 137508750. Its totient is φ = 45836248.

The previous prime is 91672481. The next prime is 91672499. The reversal of 91672498 is 89427619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89427619 = 29 ⋅3083711.

It can be written as a sum of positive squares in only one way, i.e., 81956809 + 9715689 = 9053^2 + 3117^2 .

It is not an unprimeable number, because it can be changed into a prime (91672499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22918123 + ... + 22918126.

Almost surely, 2^91672498 is an apocalyptic number.

91672498 is a deficient number, since it is larger than the sum of its proper divisors (45836252).

91672498 is a wasteful number, since it uses less digits than its factorization.

91672498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45836251.

The product of its digits is 217728, while the sum is 46.

The square root of 91672498 is about 9574.5756041717. The cubic root of 91672498 is about 450.8994323479.

The spelling of 91672498 in words is "ninety-one million, six hundred seventy-two thousand, four hundred ninety-eight".