90113660 has 96 divisors (see below), whose sum is σ = 236705280. Its totient is φ = 28055808.

The previous prime is 90113659. The next prime is 90113663. The reversal of 90113660 is 6631109.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90113663) 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, 121571 + ... + 122309.

It is an arithmetic number, because the mean of its divisors is an integer number (2465680).

Almost surely, 2^90113660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90113660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118352640).

90113660 is an abundant number, since it is smaller than the sum of its proper divisors (146591620).

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

90113660 is a wasteful number, since it uses less digits than its factorization.

90113660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90113660 is about 9492.8214983744. The cubic root of 90113660 is about 448.3290458385.

Adding to 90113660 its reverse (6631109), we get a palindrome (96744769).

The spelling of 90113660 in words is "ninety million, one hundred thirteen thousand, six hundred sixty".