2659999 has 2 divisors, whose sum is σ = 2660000. Its totient is φ = 2659998.

The previous prime is 2659963. The next prime is 2660003. The reversal of 2659999 is 9999562.

2659999 is nontrivially palindromic in base 11.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2659999 - 2¹¹ = 2657951 is a prime.

It is a Chen prime.

2659999 is a modest number, since divided by 9999 gives 265 as remainder.

2659999 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2659949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329999 + 1330000.

It is an arithmetic number, because the mean of its divisors is an integer number (1330000).

2^2659999 is an apocalyptic number.

2659999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2659999 is an equidigital number, since it uses as much as digits as its factorization.

2659999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 49.

The square root of 2659999 is about 1630.9503364603. The cubic root of 2659999 is about 138.5565808606.

It can be divided in two parts, 26 and 59999, that added together give a square (60025 = 245²).

The spelling of 2659999 in words is "two million, six hundred fifty-nine thousand, nine hundred ninety-nine".