90704171 has 4 divisors (see below), whose sum is σ = 93630144. Its totient is φ = 87778200.

The previous prime is 90704167. The next prime is 90704183. The reversal of 90704171 is 17140709.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90704171 - 2² = 90704167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90704191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1462940 + ... + 1463001.

It is an arithmetic number, because the mean of its divisors is an integer number (23407536).

Almost surely, 2^90704171 is an apocalyptic number.

90704171 is a deficient number, since it is larger than the sum of its proper divisors (2925973).

90704171 is a wasteful number, since it uses less digits than its factorization.

90704171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925972.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 90704171 is about 9523.8737391883. The cubic root of 90704171 is about 449.3062082560.

The spelling of 90704171 in words is "ninety million, seven hundred four thousand, one hundred seventy-one".