2688677972 has 6 divisors (see below), whose sum is σ = 4705186458. Its totient is φ = 1344338984.

The previous prime is 2688677963. The next prime is 2688677983. The reversal of 2688677972 is 2797768862.

It can be written as a sum of positive squares in only one way, i.e., 2398452676 + 290225296 = 48974^2 + 17036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336084743 + ... + 336084750.

It is an arithmetic number, because the mean of its divisors is an integer number (784197743).

Almost surely, 2^2688677972 is an apocalyptic number.

It is an amenable number.

2688677972 is a deficient number, since it is larger than the sum of its proper divisors (2016508486).

2688677972 is a wasteful number, since it uses less digits than its factorization.

2688677972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672169497 (or 672169495 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 62.

The square root of 2688677972 is about 51852.4635094611. The cubic root of 2688677972 is about 1390.5275453867.

The spelling of 2688677972 in words is "two billion, six hundred eighty-eight million, six hundred seventy-seven thousand, nine hundred seventy-two".