655558245 has 16 divisors (see below), whose sum is σ = 1165437120. Its totient is φ = 349630992.

The previous prime is 655558237. The next prime is 655558297. The reversal of 655558245 is 542855556.

655558245 is a `hidden beast` number, since 6 + 55 + 558 + 2 + 45 = 666.

It is not a de Polignac number, because 655558245 - 2³ = 655558237 is a prime.

It is a super-2 number, since 2×655558245² = 859513225174960050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 655558245.

It is a congruent number.

It is an unprimeable number.

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, 2427859 + ... + 2428128.

It is an arithmetic number, because the mean of its divisors is an integer number (72839820).

Almost surely, 2^655558245 is an apocalyptic number.

It is an amenable number.

655558245 is a deficient number, since it is larger than the sum of its proper divisors (509878875).

655558245 is a wasteful number, since it uses less digits than its factorization.

655558245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856001 (or 4855995 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The square root of 655558245 is about 25603.8716798847. The cubic root of 655558245 is about 868.7012130704.

The spelling of 655558245 in words is "six hundred fifty-five million, five hundred fifty-eight thousand, two hundred forty-five".