2787980068 has 6 divisors (see below), whose sum is σ = 4878965126. Its totient is φ = 1393990032.

The previous prime is 2787979973. The next prime is 2787980087. The reversal of 2787980068 is 8600897872.

It can be written as a sum of positive squares in only one way, i.e., 1524746304 + 1263233764 = 39048^2 + 35542^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348497505 + ... + 348497512.

Almost surely, 2^2787980068 is an apocalyptic number.

It is an amenable number.

2787980068 is a deficient number, since it is larger than the sum of its proper divisors (2090985058).

2787980068 is a wasteful number, since it uses less digits than its factorization.

2787980068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696995021 (or 696995019 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 2787980068 is about 52801.3263848551. The cubic root of 2787980068 is about 1407.4399951283.

The spelling of 2787980068 in words is "two billion, seven hundred eighty-seven million, nine hundred eighty thousand, sixty-eight".