404778606 has 8 divisors (see below), whose sum is σ = 809557224. Its totient is φ = 134926200.

The previous prime is 404778601. The next prime is 404778637. The reversal of 404778606 is 606877404.

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

404778606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404778601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33731545 + ... + 33731556.

It is an arithmetic number, because the mean of its divisors is an integer number (101194653).

Almost surely, 2^404778606 is an apocalyptic number.

404778606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

404778606 is a wasteful number, since it uses less digits than its factorization.

404778606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67463106.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 404778606 is about 20119.1104674138. The cubic root of 404778606 is about 739.7287817861.

The spelling of 404778606 in words is "four hundred four million, seven hundred seventy-eight thousand, six hundred six".