2077639 has 2 divisors, whose sum is σ = 2077640. Its totient is φ = 2077638.

The previous prime is 2077637. The next prime is 2077667. The reversal of 2077639 is 9367702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2077639 - 2¹ = 2077637 is a prime.

Together with 2077637, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2077637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038819 + 1038820.

It is an arithmetic number, because the mean of its divisors is an integer number (1038820).

2^2077639 is an apocalyptic number.

2077639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077639 is an equidigital number, since it uses as much as digits as its factorization.

2077639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 2077639 is about 1441.4017482992. The cubic root of 2077639 is about 127.6017693174.

The spelling of 2077639 in words is "two million, seventy-seven thousand, six hundred thirty-nine".