616673245 has 4 divisors (see below), whose sum is σ = 740007900. Its totient is φ = 493338592.

The previous prime is 616673231. The next prime is 616673287. The reversal of 616673245 is 542376616.

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 378341401 + 238331844 = 19451^2 + 15438^2 .

It is a cyclic number.

It is not a de Polignac number, because 616673245 - 2¹³ = 616665053 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 616673198 and 616673207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61667320 + ... + 61667329.

It is an arithmetic number, because the mean of its divisors is an integer number (185001975).

Almost surely, 2^616673245 is an apocalyptic number.

It is an amenable number.

616673245 is a deficient number, since it is larger than the sum of its proper divisors (123334655).

616673245 is a wasteful number, since it uses less digits than its factorization.

616673245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123334654.

The product of its digits is 181440, while the sum is 40.

The square root of 616673245 is about 24832.9064952132. The cubic root of 616673245 is about 851.1740385454.

The spelling of 616673245 in words is "six hundred sixteen million, six hundred seventy-three thousand, two hundred forty-five".