2704787640 has 80 divisors (see below), whose sum is σ = 9091102680. Its totient is φ = 721275840.

The previous prime is 2704787639. The next prime is 2704787647. The reversal of 2704787640 is 467874072.

2704787640 is a `hidden beast` number, since 2 + 70 + 478 + 76 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2704787647) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 414166 + ... + 420645.

Almost surely, 2^2704787640 is an apocalyptic number.

2704787640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2704787640 is an abundant number, since it is smaller than the sum of its proper divisors (6386315040).

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

2704787640 is a wasteful number, since it uses less digits than its factorization.

2704787640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834834 (or 834821 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 2704787640 is about 52007.5729101061. The cubic root of 2704787640 is about 1393.2992106191.

The spelling of 2704787640 in words is "two billion, seven hundred four million, seven hundred eighty-seven thousand, six hundred forty".