1366652660 has 48 divisors (see below), whose sum is σ = 2946199872. Its totient is φ = 532224000.

The previous prime is 1366652657. The next prime is 1366652669. The reversal of 1366652660 is 662566631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366652669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282260 + ... + 287060.

It is an arithmetic number, because the mean of its divisors is an integer number (61379164).

Almost surely, 2^1366652660 is an apocalyptic number.

1366652660 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 1366652660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473099936).

1366652660 is an abundant number, since it is smaller than the sum of its proper divisors (1579547212).

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

1366652660 is a wasteful number, since it uses less digits than its factorization.

1366652660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184 (or 5182 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 1366652660 is about 36968.2655800891. The cubic root of 1366652660 is about 1109.7352559643.

The spelling of 1366652660 in words is "one billion, three hundred sixty-six million, six hundred fifty-two thousand, six hundred sixty".