494706563 has 32 divisors (see below), whose sum is σ = 585446400. Its totient is φ = 414158976.

The previous prime is 494706547. The next prime is 494706571. The reversal of 494706563 is 365607494.

It is a Cunningham number, because it is equal to 22242²-1.

It is not a de Polignac number, because 494706563 - 2⁴ = 494706547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494706503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511106 + ... + 512072.

It is an arithmetic number, because the mean of its divisors is an integer number (18295200).

Almost surely, 2^494706563 is an apocalyptic number.

494706563 is a deficient number, since it is larger than the sum of its proper divisors (90739837).

494706563 is a wasteful number, since it uses less digits than its factorization.

494706563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 494706563 is about 22241.9999775200. Note that the first 4 decimals coincide. The cubic root of 494706563 is about 790.8896472290.

The spelling of 494706563 in words is "four hundred ninety-four million, seven hundred six thousand, five hundred sixty-three".