396805563 has 48 divisors (see below), whose sum is σ = 722082816. Its totient is φ = 203973120.

The previous prime is 396805561. The next prime is 396805573. The reversal of 396805563 is 365508693.

396805563 is a `hidden beast` number, since 3 + 9 + 6 + 80 + 5 + 563 = 666.

It is not a de Polignac number, because 396805563 - 2¹ = 396805561 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (396805561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64270 + ... + 70172.

It is an arithmetic number, because the mean of its divisors is an integer number (15043392).

Almost surely, 2^396805563 is an apocalyptic number.

396805563 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

396805563 is a deficient number, since it is larger than the sum of its proper divisors (325277253).

396805563 is a wasteful number, since it uses less digits than its factorization.

396805563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024 (or 6021 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 396805563 is about 19919.9789909528. The cubic root of 396805563 is about 734.8396540403.

The spelling of 396805563 in words is "three hundred ninety-six million, eight hundred five thousand, five hundred sixty-three".