2704666640 has 80 divisors (see below), whose sum is σ = 6780691008. Its totient is φ = 997375488.

The previous prime is 2704666631. The next prime is 2704666651. The reversal of 2704666640 is 466664072.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1333307 + ... + 1335333.

Almost surely, 2^2704666640 is an apocalyptic number.

2704666640 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 2704666640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3390345504).

2704666640 is an abundant number, since it is smaller than the sum of its proper divisors (4076024368).

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

2704666640 is a wasteful number, since it uses less digits than its factorization.

2704666640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 2704666640 is about 52006.4096049708. The cubic root of 2704666640 is about 1393.2784336684.

The spelling of 2704666640 in words is "two billion, seven hundred four million, six hundred sixty-six thousand, six hundred forty".