617228333945 has 4 divisors (see below), whose sum is σ = 740674000740. Its totient is φ = 493782667152.

The previous prime is 617228333899. The next prime is 617228333951. The reversal of 617228333945 is 549333822716.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119232780601 + 497995553344 = 345301^2 + 705688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617228333945 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61722833390 + ... + 61722833399.

It is an arithmetic number, because the mean of its divisors is an integer number (185168500185).

Almost surely, 2^617228333945 is an apocalyptic number.

It is an amenable number.

617228333945 is a deficient number, since it is larger than the sum of its proper divisors (123445666795).

617228333945 is a wasteful number, since it uses less digits than its factorization.

617228333945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123445666794.

The product of its digits is 6531840, while the sum is 53.

The spelling of 617228333945 in words is "six hundred seventeen billion, two hundred twenty-eight million, three hundred thirty-three thousand, nine hundred forty-five".