2661199 has 2 divisors, whose sum is σ = 2661200. Its totient is φ = 2661198.

The previous prime is 2661181. The next prime is 2661221. The reversal of 2661199 is 9911662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330599 + 1330600.

It is an arithmetic number, because the mean of its divisors is an integer number (1330600).

2^2661199 is an apocalyptic number.

2661199 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661199 is an equidigital number, since it uses as much as digits as its factorization.

2661199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 2661199 is about 1631.3181786519. The cubic root of 2661199 is about 138.5774133121.

The spelling of 2661199 in words is "two million, six hundred sixty-one thousand, one hundred ninety-nine".