655206506 has 4 divisors (see below), whose sum is σ = 982809762. Its totient is φ = 327603252.

The previous prime is 655206479. The next prime is 655206529. The reversal of 655206506 is 605602556.

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., 632975281 + 22231225 = 25159^2 + 4715^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163801625 + ... + 163801628.

Almost surely, 2^655206506 is an apocalyptic number.

655206506 is a deficient number, since it is larger than the sum of its proper divisors (327603256).

655206506 is a wasteful number, since it uses less digits than its factorization.

655206506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327603255.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 655206506 is about 25597.0018947532. The cubic root of 655206506 is about 868.5458184058.

The spelling of 655206506 in words is "six hundred fifty-five million, two hundred six thousand, five hundred six".