90985071 has 8 divisors (see below), whose sum is σ = 128449584. Its totient is φ = 57088640.

The previous prime is 90985057. The next prime is 90985073. The reversal of 90985071 is 17058909.

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 90985071 - 2⁵ = 90985039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90985073) 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, 891960 + ... + 892061.

It is an arithmetic number, because the mean of its divisors is an integer number (16056198).

Almost surely, 2^90985071 is an apocalyptic number.

90985071 is a deficient number, since it is larger than the sum of its proper divisors (37464513).

90985071 is a wasteful number, since it uses less digits than its factorization.

90985071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784041.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 90985071 is about 9538.6094898575. The cubic root of 90985071 is about 449.7695461978.

The spelling of 90985071 in words is "ninety million, nine hundred eighty-five thousand, seventy-one".