563537978 has 16 divisors (see below), whose sum is σ = 849630600. Its totient is φ = 280332096.

The previous prime is 563537977. The next prime is 563537983. The reversal of 563537978 is 879735365.

It can be written as a sum of positive squares in 4 ways, for example, as 357701569 + 205836409 = 18913^2 + 14347^2 .

It is not an unprimeable number, because it can be changed into a prime (563537971) 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, 555800 + ... + 556812.

Almost surely, 2^563537978 is an apocalyptic number.

563537978 is a deficient number, since it is larger than the sum of its proper divisors (286092622).

563537978 is a wasteful number, since it uses less digits than its factorization.

563537978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161.

The product of its digits is 4762800, while the sum is 53.

The square root of 563537978 is about 23738.9548632622. The cubic root of 563537978 is about 825.9892524989.

The spelling of 563537978 in words is "five hundred sixty-three million, five hundred thirty-seven thousand, nine hundred seventy-eight".