90063915 has 16 divisors (see below), whose sum is σ = 144446976. Its totient is φ = 47919200.

The previous prime is 90063893. The next prime is 90063917. The reversal of 90063915 is 51936009.

It is not a de Polignac number, because 90063915 - 2¹⁵ = 90031147 is a prime.

It is a super-2 number, since 2×90063915² = 16223017570254450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90063917) 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 15 ways as a sum of consecutive naturals, for example, 501 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (9027936).

Almost surely, 2^90063915 is an apocalyptic number.

90063915 is a deficient number, since it is larger than the sum of its proper divisors (54383061).

90063915 is a wasteful number, since it uses less digits than its factorization.

90063915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14370.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 90063915 is about 9490.2009989252. The cubic root of 90063915 is about 448.2465343620.

It can be divided in two parts, 9006 and 3915, that added together give a palindrome (12921).

The spelling of 90063915 in words is "ninety million, sixty-three thousand, nine hundred fifteen".