90986511 has 32 divisors (see below), whose sum is σ = 151861248. Its totient is φ = 47075040.

The previous prime is 90986491. The next prime is 90986561. The reversal of 90986511 is 11568909.

It is not a de Polignac number, because 90986511 - 2¹⁰ = 90985487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90986511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90986561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70276 + ... + 71558.

It is an arithmetic number, because the mean of its divisors is an integer number (4745664).

Almost surely, 2^90986511 is an apocalyptic number.

90986511 is a deficient number, since it is larger than the sum of its proper divisors (60874737).

90986511 is a wasteful number, since it uses less digits than its factorization.

90986511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 90986511 is about 9538.6849722590. The cubic root of 90986511 is about 449.7719189853.

The spelling of 90986511 in words is "ninety million, nine hundred eighty-six thousand, five hundred eleven".