2660237720 has 64 divisors (see below), whose sum is σ = 7061299200. Its totient is φ = 882656640.

The previous prime is 2660237719. The next prime is 2660237737. The reversal of 2660237720 is 277320662.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144560 + ... + 161919.

It is an arithmetic number, because the mean of its divisors is an integer number (110332800).

Almost surely, 2^2660237720 is an apocalyptic number.

2660237720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660237720 is an abundant number, since it is smaller than the sum of its proper divisors (4401061480).

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

2660237720 is a wasteful number, since it uses less digits than its factorization.

2660237720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306528 (or 306524 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 2660237720 is about 51577.4923779743. The cubic root of 2660237720 is about 1385.6072562877.

The spelling of 2660237720 in words is "two billion, six hundred sixty million, two hundred thirty-seven thousand, seven hundred twenty".