84126563 has 4 divisors (see below), whose sum is σ = 84192528. Its totient is φ = 84060600.

The previous prime is 84126541. The next prime is 84126649. The reversal of 84126563 is 36562148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84126563 - 2⁶ = 84126499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84126463) 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 3 ways as a sum of consecutive naturals, for example, 31031 + ... + 33632.

It is an arithmetic number, because the mean of its divisors is an integer number (21048132).

Almost surely, 2^84126563 is an apocalyptic number.

84126563 is a deficient number, since it is larger than the sum of its proper divisors (65965).

84126563 is a wasteful number, since it uses less digits than its factorization.

84126563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65964.

The product of its digits is 34560, while the sum is 35.

The square root of 84126563 is about 9172.0533687937. The cubic root of 84126563 is about 438.1717580097.

The spelling of 84126563 in words is "eighty-four million, one hundred twenty-six thousand, five hundred sixty-three".