396766563 has 16 divisors (see below), whose sum is σ = 546034560. Its totient is φ = 256139136.

The previous prime is 396766541. The next prime is 396766571. The reversal of 396766563 is 365667693.

It is not a de Polignac number, because 396766563 - 2²¹ = 394669411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396766523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4870 + ... + 28587.

It is an arithmetic number, because the mean of its divisors is an integer number (34127160).

Almost surely, 2^396766563 is an apocalyptic number.

396766563 is a deficient number, since it is larger than the sum of its proper divisors (149267997).

396766563 is a wasteful number, since it uses less digits than its factorization.

396766563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33586.

The product of its digits is 3674160, while the sum is 51.

The square root of 396766563 is about 19919.0000502033. Note that the first 4 decimals coincide. The cubic root of 396766563 is about 734.8155787012.

The spelling of 396766563 in words is "three hundred ninety-six million, seven hundred sixty-six thousand, five hundred sixty-three".