396663655 has 8 divisors (see below), whose sum is σ = 481345200. Its totient is φ = 313765056.

The previous prime is 396663613. The next prime is 396663697. The reversal of 396663655 is 556366693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (396663613) and next prime (396663697).

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 396663655 - 2⁹ = 396663143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396663599 and 396663608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445245 + ... + 446134.

It is an arithmetic number, because the mean of its divisors is an integer number (60168150).

Almost surely, 2^396663655 is an apocalyptic number.

396663655 is a deficient number, since it is larger than the sum of its proper divisors (84681545).

396663655 is an equidigital number, since it uses as much as digits as its factorization.

396663655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891473.

The product of its digits is 2624400, while the sum is 49.

The square root of 396663655 is about 19916.4167208863. The cubic root of 396663655 is about 734.7520443318.

The spelling of 396663655 in words is "three hundred ninety-six million, six hundred sixty-three thousand, six hundred fifty-five".