1263330660 has 96 divisors (see below), whose sum is σ = 3707907840. Its totient is φ = 320776192.

The previous prime is 1263330659. The next prime is 1263330661. The reversal of 1263330660 is 660333621.

It is an interprime number because it is at equal distance from previous prime (1263330659) and next prime (1263330661).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1263330661) 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, 319576 + ... + 323504.

It is an arithmetic number, because the mean of its divisors is an integer number (38624040).

Almost surely, 2^1263330660 is an apocalyptic number.

1263330660 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 1263330660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853953920).

1263330660 is an abundant number, since it is smaller than the sum of its proper divisors (2444577180).

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

1263330660 is a wasteful number, since it uses less digits than its factorization.

1263330660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 1263330660 is about 35543.3630935510. The cubic root of 1263330660 is about 1081.0331505832.

The spelling of 1263330660 in words is "one billion, two hundred sixty-three million, three hundred thirty thousand, six hundred sixty".