90770 has 16 divisors (see below), whose sum is σ = 169560. Its totient is φ = 34944.

The previous prime is 90749. The next prime is 90787. The reversal of 90770 is 7709.

It can be written as a sum of positive squares in 4 ways, for example, as 43681 + 47089 = 209^2 + 217^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134 + ... + 446.

2⁹⁰⁷⁷⁰ is an apocalyptic number.

90770 is a deficient number, since it is larger than the sum of its proper divisors (78790).

90770 is a wasteful number, since it uses less digits than its factorization.

90770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 441, while the sum is 23.

The square root of 90770 is about 301.2806001056. The cubic root of 90770 is about 44.9414877371.

The spelling of 90770 in words is "ninety thousand, seven hundred seventy".