1201027660 has 96 divisors (see below), whose sum is σ = 2957875200. Its totient is φ = 401096448.

The previous prime is 1201027657. The next prime is 1201027669. The reversal of 1201027660 is 667201021.

It is not an unprimeable number, because it can be changed into a prime (1201027669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2296159 + ... + 2296681.

It is an arithmetic number, because the mean of its divisors is an integer number (30811200).

Almost surely, 2^1201027660 is an apocalyptic number.

1201027660 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 1201027660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478937600).

1201027660 is an abundant number, since it is smaller than the sum of its proper divisors (1756847540).

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

1201027660 is a wasteful number, since it uses less digits than its factorization.

1201027660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1201027660 is about 34655.8459714952. The cubic root of 1201027660 is about 1062.9618303257.

Adding to 1201027660 its reverse (667201021), we get a palindrome (1868228681).

The spelling of 1201027660 in words is "one billion, two hundred one million, twenty-seven thousand, six hundred sixty".