90006770 has 16 divisors (see below), whose sum is σ = 185156928. Its totient is φ = 30859440.

The previous prime is 90006703. The next prime is 90006779. The reversal of 90006770 is 7760009.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90006779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642836 + ... + 642975.

It is an arithmetic number, because the mean of its divisors is an integer number (11572308).

Almost surely, 2^90006770 is an apocalyptic number.

90006770 is an abundant number, since it is smaller than the sum of its proper divisors (95150158).

90006770 is a wasteful number, since it uses less digits than its factorization.

90006770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285825.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 90006770 is about 9487.1897841247. The cubic root of 90006770 is about 448.1517110814.

Adding to 90006770 its reverse (7760009), we get a palindrome (97766779).

Subtracting from 90006770 its reverse (7760009), we obtain a square (82246761 = 9069²).

The spelling of 90006770 in words is "ninety million, six thousand, seven hundred seventy".