1266585600 has 624 divisors, whose sum is σ = 5200302080. Its totient is φ = 265420800.

The previous prime is 1266585599. The next prime is 1266585601. The reversal of 1266585600 is 65856621.

1266585600 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1266585599) and next prime (1266585601).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266585601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40857585 + ... + 40857615.

Almost surely, 2^1266585600 is an apocalyptic number.

1266585600 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 1266585600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600151040).

1266585600 is an abundant number, since it is smaller than the sum of its proper divisors (3933716480).

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

1266585600 is a wasteful number, since it uses less digits than its factorization.

1266585600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1266585600 is about 35589.1219335347. The cubic root of 1266585600 is about 1081.9607727085.

The spelling of 1266585600 in words is "one billion, two hundred sixty-six million, five hundred eighty-five thousand, six hundred".