90878543 has 8 divisors (see below), whose sum is σ = 108377088. Its totient is φ = 74508984.

The previous prime is 90878537. The next prime is 90878587. The reversal of 90878543 is 34587809.

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 90878543 - 2¹⁰ = 90877519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90878494 and 90878503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90874543) 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, 282071 + ... + 282392.

It is an arithmetic number, because the mean of its divisors is an integer number (13547136).

Almost surely, 2^90878543 is an apocalyptic number.

90878543 is a deficient number, since it is larger than the sum of its proper divisors (17498545).

90878543 is a wasteful number, since it uses less digits than its factorization.

90878543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564493.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 90878543 is about 9533.0238119917. The cubic root of 90878543 is about 449.5939431705.

The spelling of 90878543 in words is "ninety million, eight hundred seventy-eight thousand, five hundred forty-three".