396740563 has 8 divisors (see below), whose sum is σ = 404521776. Its totient is φ = 388970400.

The previous prime is 396740537. The next prime is 396740587. The reversal of 396740563 is 365047693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396740563 - 2¹⁷ = 396609491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396740863) 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, 143373 + ... + 146113.

It is an arithmetic number, because the mean of its divisors is an integer number (50565222).

Almost surely, 2^396740563 is an apocalyptic number.

396740563 is a deficient number, since it is larger than the sum of its proper divisors (7781213).

396740563 is a wasteful number, since it uses less digits than its factorization.

396740563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525.

The product of its (nonzero) digits is 408240, while the sum is 43.

The square root of 396740563 is about 19918.3473963078. The cubic root of 396740563 is about 734.7995275986.

The spelling of 396740563 in words is "three hundred ninety-six million, seven hundred forty thousand, five hundred sixty-three".