91672998 has 8 divisors (see below), whose sum is σ = 183346008. Its totient is φ = 30557664.

The previous prime is 91672979. The next prime is 91673003. The reversal of 91672998 is 89927619.

It is a happy number.

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

91672998 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 91672998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7639411 + ... + 7639422.

It is an arithmetic number, because the mean of its divisors is an integer number (22918251).

Almost surely, 2^91672998 is an apocalyptic number.

91672998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91672998 is a wasteful number, since it uses less digits than its factorization.

91672998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15278838.

The product of its digits is 489888, while the sum is 51.

The square root of 91672998 is about 9574.6017149540. The cubic root of 91672998 is about 450.9002521114.

The spelling of 91672998 in words is "ninety-one million, six hundred seventy-two thousand, nine hundred ninety-eight".