404216568 has 80 divisors (see below), whose sum is σ = 1293935280. Its totient is φ = 115489152.

The previous prime is 404216567. The next prime is 404216569. The reversal of 404216568 is 865612404.

404216568 is a `hidden beast` number, since 40 + 42 + 16 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (404216567) and next prime (404216569).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404216563) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40021 + ... + 49092.

It is an arithmetic number, because the mean of its divisors is an integer number (16174191).

Almost surely, 2^404216568 is an apocalyptic number.

It is an amenable number.

404216568 is an abundant number, since it is smaller than the sum of its proper divisors (889718712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404216568 is a wasteful number, since it uses less digits than its factorization.

404216568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89138 (or 89125 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 404216568 is about 20105.1378508082. The cubic root of 404216568 is about 739.3862502936.

The spelling of 404216568 in words is "four hundred four million, two hundred sixteen thousand, five hundred sixty-eight".