83478563 has 8 divisors (see below), whose sum is σ = 95857920. Its totient is φ = 71212680.

The previous prime is 83478557. The next prime is 83478581. The reversal of 83478563 is 36587438.

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

It is not a de Polignac number, because 83478563 - 2⁴ = 83478547 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83475563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26783 + ... + 29736.

It is an arithmetic number, because the mean of its divisors is an integer number (11982240).

Almost surely, 2^83478563 is an apocalyptic number.

83478563 is a deficient number, since it is larger than the sum of its proper divisors (12379357).

83478563 is a wasteful number, since it uses less digits than its factorization.

83478563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56737.

The product of its digits is 483840, while the sum is 44.

The square root of 83478563 is about 9136.6603855019. The cubic root of 83478563 is about 437.0438247080.

It can be divided in two parts, 834 and 78563, that added together give a palindrome (79397).

The spelling of 83478563 in words is "eighty-three million, four hundred seventy-eight thousand, five hundred sixty-three".