90836 has 6 divisors (see below), whose sum is σ = 158970. Its totient is φ = 45416.

The previous prime is 90833. The next prime is 90841. The reversal of 90836 is 63809.

90836 = T₁₇₁ + T₁₇₂ + ... + T₁₇₆.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48400 + 42436 = 220^2 + 206^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11351 + ... + 11358.

It is an arithmetic number, because the mean of its divisors is an integer number (26495).

2⁹⁰⁸³⁶ is an apocalyptic number.

It is an amenable number.

90836 is a deficient number, since it is larger than the sum of its proper divisors (68134).

90836 is a wasteful number, since it uses less digits than its factorization.

90836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22713 (or 22711 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90836 is about 301.3901126447. The cubic root of 90836 is about 44.9523776037.

The spelling of 90836 in words is "ninety thousand, eight hundred thirty-six".