2688977 has 2 divisors, whose sum is σ = 2688978. Its totient is φ = 2688976.

The previous prime is 2688949. The next prime is 2688979. The reversal of 2688977 is 7798862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 495616 = 1481^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2688977 - 2⁶ = 2688913 is a prime.

Together with 2688979, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹³ + 6³ + 8⁵ + 8⁷ + 9⁶ + 7⁴ + 7⁵ .

It is not a weakly prime, because it can be changed into another prime (2688979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344488 + 1344489.

It is an arithmetic number, because the mean of its divisors is an integer number (1344489).

2^2688977 is an apocalyptic number.

It is an amenable number.

2688977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688977 is an equidigital number, since it uses as much as digits as its factorization.

2688977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 2688977 is about 1639.8100499753. The cubic root of 2688977 is about 139.0579093801.

The spelling of 2688977 in words is "two million, six hundred eighty-eight thousand, nine hundred seventy-seven".