2660099 has 4 divisors (see below), whose sum is σ = 2864736. Its totient is φ = 2455464.

The previous prime is 2660089. The next prime is 2660107. The reversal of 2660099 is 9900662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9900662 = 2 ⋅4950331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660099 is a prime.

It is a super-2 number, since 2×2660099² = 14152253379602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102299 + ... + 102324.

It is an arithmetic number, because the mean of its divisors is an integer number (716184).

2^2660099 is an apocalyptic number.

2660099 is a deficient number, since it is larger than the sum of its proper divisors (204637).

2660099 is a wasteful number, since it uses less digits than its factorization.

2660099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204636.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 2660099 is about 1630.9809931449. The cubic root of 2660099 is about 138.5583171375.

The spelling of 2660099 in words is "two million, six hundred sixty thousand, ninety-nine".