655550994 has 32 divisors (see below), whose sum is σ = 1502392320. Its totient is φ = 186801552.

The previous prime is 655550993. The next prime is 655550999. The reversal of 655550994 is 499055556.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (655550993) 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 15 ways as a sum of consecutive naturals, for example, 4674 + ... + 36509.

It is an arithmetic number, because the mean of its divisors is an integer number (46949760).

Almost surely, 2^655550994 is an apocalyptic number.

655550994 is an abundant number, since it is smaller than the sum of its proper divisors (846841326).

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

655550994 is a wasteful number, since it uses less digits than its factorization.

655550994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41574.

The product of its (nonzero) digits is 1215000, while the sum is 48.

The square root of 655550994 is about 25603.7300798145. The cubic root of 655550994 is about 868.6980102145.

The spelling of 655550994 in words is "six hundred fifty-five million, five hundred fifty thousand, nine hundred ninety-four".