1966601560 has 256 divisors, whose sum is σ = 5839257600. Its totient is φ = 578188800.

The previous prime is 1966601551. The next prime is 1966601587. The reversal of 1966601560 is 651066691.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4105401 + ... + 4105879.

It is an arithmetic number, because the mean of its divisors is an integer number (22809600).

Almost surely, 2^1966601560 is an apocalyptic number.

1966601560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1966601560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2919628800).

1966601560 is an abundant number, since it is smaller than the sum of its proper divisors (3872656040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1966601560 is a wasteful number, since it uses less digits than its factorization.

1966601560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1966601560 is about 44346.3815885806. The cubic root of 1966601560 is about 1252.8684122010.

The spelling of 1966601560 in words is "one billion, nine hundred sixty-six million, six hundred one thousand, five hundred sixty".