90005667 has 8 divisors (see below), whose sum is σ = 127066896. Its totient is φ = 56474112.

The previous prime is 90005659. The next prime is 90005677. The reversal of 90005667 is 76650009.

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

It is not a de Polignac number, because 90005667 - 2³ = 90005659 is a prime.

It is a super-2 number, since 2×90005667² = 16202040184229778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90005627) 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 7 ways as a sum of consecutive naturals, for example, 882358 + ... + 882459.

It is an arithmetic number, because the mean of its divisors is an integer number (15883362).

Almost surely, 2^90005667 is an apocalyptic number.

90005667 is a deficient number, since it is larger than the sum of its proper divisors (37061229).

90005667 is a wasteful number, since it uses less digits than its factorization.

90005667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764837.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 90005667 is about 9487.1316529286. The cubic root of 90005667 is about 448.1498804289.

The spelling of 90005667 in words is "ninety million, five thousand, six hundred sixty-seven".