611516609 has 8 divisors (see below), whose sum is σ = 667309440. Its totient is φ = 555757200.

The previous prime is 611516603. The next prime is 611516611. The reversal of 611516609 is 906615116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611516609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611516603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44447 + ... + 56555.

It is an arithmetic number, because the mean of its divisors is an integer number (83413680).

Almost surely, 2^611516609 is an apocalyptic number.

It is an amenable number.

611516609 is a deficient number, since it is larger than the sum of its proper divisors (55792831).

611516609 is a wasteful number, since it uses less digits than its factorization.

611516609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16711.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 611516609 is about 24728.8618622047. The cubic root of 611516609 is about 848.7948822897.

The spelling of 611516609 in words is "six hundred eleven million, five hundred sixteen thousand, six hundred nine".