655555106 has 4 divisors (see below), whose sum is σ = 983332662. Its totient is φ = 327777552.

The previous prime is 655555093. The next prime is 655555123. The reversal of 655555106 is 601555556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 637108081 + 18447025 = 25241^2 + 4295^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 655555106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163888775 + ... + 163888778.

Almost surely, 2^655555106 is an apocalyptic number.

655555106 is a deficient number, since it is larger than the sum of its proper divisors (327777556).

655555106 is a wasteful number, since it uses less digits than its factorization.

655555106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327777555.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 655555106 is about 25603.8103804883. The cubic root of 655555106 is about 868.6998265384.

The spelling of 655555106 in words is "six hundred fifty-five million, five hundred fifty-five thousand, one hundred six".