90766563 has 8 divisors (see below), whose sum is σ = 121066176. Its totient is φ = 60489000.

The previous prime is 90766547. The next prime is 90766601. The reversal of 90766563 is 36566709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90766563 - 2⁴ = 90766547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90766063) 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, 12588 + ... + 18438.

It is an arithmetic number, because the mean of its divisors is an integer number (15133272).

Almost surely, 2^90766563 is an apocalyptic number.

90766563 is a deficient number, since it is larger than the sum of its proper divisors (30299613).

90766563 is a wasteful number, since it uses less digits than its factorization.

90766563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11025.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 90766563 is about 9527.1487340127. The cubic root of 90766563 is about 449.4092049446.

The spelling of 90766563 in words is "ninety million, seven hundred sixty-six thousand, five hundred sixty-three".