90011670 has 64 divisors (see below), whose sum is σ = 250407936. Its totient is φ = 20280960.

The previous prime is 90011659. The next prime is 90011671. The reversal of 90011670 is 7611009.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90011670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90011671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11892 + ... + 17928.

It is an arithmetic number, because the mean of its divisors is an integer number (3912624).

Almost surely, 2^90011670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90011670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125203968).

90011670 is an abundant number, since it is smaller than the sum of its proper divisors (160396266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90011670 is a wasteful number, since it uses less digits than its factorization.

90011670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 90011670 is about 9487.4480235730. The cubic root of 90011670 is about 448.1598434458.

Adding to 90011670 its reverse (7611009), we get a palindrome (97622679).

The spelling of 90011670 in words is "ninety million, eleven thousand, six hundred seventy".