2770639 has 2 divisors, whose sum is σ = 2770640. Its totient is φ = 2770638.

The previous prime is 2770627. The next prime is 2770667. The reversal of 2770639 is 9360772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2770639 - 2¹³ = 2762447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2770939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385319 + 1385320.

It is an arithmetic number, because the mean of its divisors is an integer number (1385320).

2^2770639 is an apocalyptic number.

2770639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2770639 is an equidigital number, since it uses as much as digits as its factorization.

2770639 is an evil number, because the sum of its binary digits is even.

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

The square root of 2770639 is about 1664.5236555844. The cubic root of 2770639 is about 140.4515860092.

The spelling of 2770639 in words is "two million, seven hundred seventy thousand, six hundred thirty-nine".