90798563 has 8 divisors (see below), whose sum is σ = 92262240. Its totient is φ = 89340160.

The previous prime is 90798541. The next prime is 90798577. The reversal of 90798563 is 36589709.

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

It is a cyclic number.

It is not a de Polignac number, because 90798563 - 2¹⁸ = 90536419 is a prime.

It is a super-3 number, since 3×90798563³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90795563) 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, 47123 + ... + 49011.

It is an arithmetic number, because the mean of its divisors is an integer number (11532780).

Almost surely, 2^90798563 is an apocalyptic number.

90798563 is a deficient number, since it is larger than the sum of its proper divisors (1463677).

90798563 is a wasteful number, since it uses less digits than its factorization.

90798563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 90798563 is about 9528.8279971883. The cubic root of 90798563 is about 449.4620122207.

The spelling of 90798563 in words is "ninety million, seven hundred ninety-eight thousand, five hundred sixty-three".