616610611 has 4 divisors (see below), whose sum is σ = 643419792. Its totient is φ = 589801432.

The previous prime is 616610597. The next prime is 616610627. The reversal of 616610611 is 116016616.

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 616610611 - 2⁷ = 616610483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616610611.

It is not an unprimeable number, because it can be changed into a prime (616610641) 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, 13404556 + ... + 13404601.

It is an arithmetic number, because the mean of its divisors is an integer number (160854948).

Almost surely, 2^616610611 is an apocalyptic number.

616610611 is a deficient number, since it is larger than the sum of its proper divisors (26809181).

616610611 is a wasteful number, since it uses less digits than its factorization.

616610611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809180.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 616610611 is about 24831.6453542652. The cubic root of 616610611 is about 851.1452203448.

The spelling of 616610611 in words is "six hundred sixteen million, six hundred ten thousand, six hundred eleven".