2649700720 has 40 divisors (see below), whose sum is σ = 6165940176. Its totient is φ = 1058953728.

The previous prime is 2649700661. The next prime is 2649700747. The reversal of 2649700720 is 270079462.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2649700720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81559 + ... + 109321.

Almost surely, 2^2649700720 is an apocalyptic number.

2649700720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2649700720 is an abundant number, since it is smaller than the sum of its proper divisors (3516239456).

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

2649700720 is a wasteful number, since it uses less digits than its factorization.

2649700720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28969 (or 28963 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 2649700720 is about 51475.2437585292. The cubic root of 2649700720 is about 1383.7754071052.

The spelling of 2649700720 in words is "two billion, six hundred forty-nine million, seven hundred thousand, seven hundred twenty".