1560666651 has 8 divisors (see below), whose sum is σ = 2085027840. Its totient is φ = 1038374952.

The previous prime is 1560666649. The next prime is 1560666671. The reversal of 1560666651 is 1566660651.

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

It is not a de Polignac number, because 1560666651 - 2¹ = 1560666649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1560666641) 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, 515611 + ... + 518628.

It is an arithmetic number, because the mean of its divisors is an integer number (260628480).

Almost surely, 2^1560666651 is an apocalyptic number.

1560666651 is a deficient number, since it is larger than the sum of its proper divisors (524361189).

1560666651 is a wasteful number, since it uses less digits than its factorization.

1560666651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034745.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1560666651 is about 39505.2737112401. The cubic root of 1560666651 is about 1159.9431826610.

The spelling of 1560666651 in words is "one billion, five hundred sixty million, six hundred sixty-six thousand, six hundred fifty-one".