90783 has 24 divisors (see below), whose sum is σ = 164736. Its totient is φ = 46800.

The previous prime is 90749. The next prime is 90787. The reversal of 90783 is 38709.

It is a happy number.

It is not a de Polignac number, because 90783 - 2⁸ = 90527 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628 + ... + 758.

It is an arithmetic number, because the mean of its divisors is an integer number (6864).

2⁹⁰⁷⁸³ is an apocalyptic number.

90783 is a deficient number, since it is larger than the sum of its proper divisors (73953).

90783 is a wasteful number, since it uses less digits than its factorization.

90783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 90783 is about 301.3021739052. The cubic root of 90783 is about 44.9436331282.

It can be divided in two parts, 907 and 83, that added together give a triangular number (990 = T₄₄).

The spelling of 90783 in words is "ninety thousand, seven hundred eighty-three".