611660611 has 8 divisors (see below), whose sum is σ = 622805040. Its totient is φ = 600542208.

The previous prime is 611660587. The next prime is 611660657. The reversal of 611660611 is 116066116.

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-611660611 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 611660611.

It is not an unprimeable number, because it can be changed into a prime (611660111) 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, 44515 + ... + 56611.

It is an arithmetic number, because the mean of its divisors is an integer number (77850630).

Almost surely, 2^611660611 is an apocalyptic number.

611660611 is a deficient number, since it is larger than the sum of its proper divisors (11144429).

611660611 is a wasteful number, since it uses less digits than its factorization.

611660611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13013.

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

The square root of 611660611 is about 24731.7733088430. The cubic root of 611660611 is about 848.8615027575.

The spelling of 611660611 in words is "six hundred eleven million, six hundred sixty thousand, six hundred eleven".