1560661611 has 8 divisors (see below), whose sum is σ = 2094848400. Its totient is φ = 1033457952.

The previous prime is 1560661603. The next prime is 1560661633. The reversal of 1560661611 is 1161660651.

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

It is not a de Polignac number, because 1560661611 - 2³ = 1560661603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1560661601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1745260 + ... + 1746153.

It is an arithmetic number, because the mean of its divisors is an integer number (261856050).

Almost surely, 2^1560661611 is an apocalyptic number.

1560661611 is a deficient number, since it is larger than the sum of its proper divisors (534186789).

1560661611 is a wasteful number, since it uses less digits than its factorization.

1560661611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491565.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1560661611 is about 39505.2099222368. The cubic root of 1560661611 is about 1159.9419340237.

The spelling of 1560661611 in words is "one billion, five hundred sixty million, six hundred sixty-one thousand, six hundred eleven".