655556394 has 8 divisors (see below), whose sum is σ = 1311112800. Its totient is φ = 218518796.

The previous prime is 655556393. The next prime is 655556399. The reversal of 655556394 is 493655556.

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

655556394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (655556393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54629694 + ... + 54629705.

It is an arithmetic number, because the mean of its divisors is an integer number (163889100).

Almost surely, 2^655556394 is an apocalyptic number.

655556394 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.

655556394 is a wasteful number, since it uses less digits than its factorization.

655556394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109259404.

The product of its digits is 2430000, while the sum is 48.

The square root of 655556394 is about 25603.8355329822. The cubic root of 655556394 is about 868.7003954632.

The spelling of 655556394 in words is "six hundred fifty-five million, five hundred fifty-six thousand, three hundred ninety-four".