90550863 has 12 divisors (see below), whose sum is σ = 140857080. Its totient is φ = 55723536.

The previous prime is 90550829. The next prime is 90550883. The reversal of 90550863 is 36805509.

90550863 is a `hidden beast` number, since 90 + 5 + 508 + 63 = 666.

It is not a de Polignac number, because 90550863 - 2⁶ = 90550799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90550883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386853 + ... + 387086.

It is an arithmetic number, because the mean of its divisors is an integer number (11738090).

Almost surely, 2^90550863 is an apocalyptic number.

90550863 is a deficient number, since it is larger than the sum of its proper divisors (50306217).

90550863 is a wasteful number, since it uses less digits than its factorization.

90550863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773958 (or 773955 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90550863 is about 9515.8217196415. The cubic root of 90550863 is about 449.0529266994.

The spelling of 90550863 in words is "ninety million, five hundred fifty thousand, eight hundred sixty-three".