2660693760 has 216 divisors, whose sum is σ = 9338251104. Its totient is φ = 699310080.

The previous prime is 2660693719. The next prime is 2660693771. The reversal of 2660693760 is 673960662.

2660693760 is a `hidden beast` number, since 2 + 6 + 606 + 9 + 37 + 6 + 0 = 666.

2660693760 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 816294 + ... + 819546.

It is an arithmetic number, because the mean of its divisors is an integer number (43232644).

Almost surely, 2^2660693760 is an apocalyptic number.

2660693760 is a gapful number since it is divisible by the number (20) 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 2660693760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4669125552).

2660693760 is an abundant number, since it is smaller than the sum of its proper divisors (6677557344).

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

2660693760 is a wasteful number, since it uses less digits than its factorization.

2660693760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 2660693760 is about 51581.9131091510. The cubic root of 2660693760 is about 1385.6864291907.

The spelling of 2660693760 in words is "two billion, six hundred sixty million, six hundred ninety-three thousand, seven hundred sixty".