616561107 has 4 divisors (see below), whose sum is σ = 822081480. Its totient is φ = 411040736.

The previous prime is 616561091. The next prime is 616561111. The reversal of 616561107 is 701165616.

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

It is a cyclic number.

It is not a de Polignac number, because 616561107 - 2⁴ = 616561091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616561177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102760182 + ... + 102760187.

It is an arithmetic number, because the mean of its divisors is an integer number (205520370).

Almost surely, 2^616561107 is an apocalyptic number.

616561107 is a deficient number, since it is larger than the sum of its proper divisors (205520373).

616561107 is a wasteful number, since it uses less digits than its factorization.

616561107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205520372.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 616561107 is about 24830.6485416712. The cubic root of 616561107 is about 851.1224419388.

The spelling of 616561107 in words is "six hundred sixteen million, five hundred sixty-one thousand, one hundred seven".