2688629 has 2 divisors, whose sum is σ = 2688630. Its totient is φ = 2688628.

The previous prime is 2688617. The next prime is 2688659. The reversal of 2688629 is 9268862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2464900 + 223729 = 1570^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2688629 - 2⁸ = 2688373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344314 + 1344315.

It is an arithmetic number, because the mean of its divisors is an integer number (1344315).

2^2688629 is an apocalyptic number.

It is an amenable number.

2688629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688629 is an equidigital number, since it uses as much as digits as its factorization.

2688629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 2688629 is about 1639.7039366910. The cubic root of 2688629 is about 139.0519102907.

The spelling of 2688629 in words is "two million, six hundred eighty-eight thousand, six hundred twenty-nine".