2145699 has 12 divisors (see below), whose sum is σ = 3112200. Its totient is φ = 1424544.

The previous prime is 2145683. The next prime is 2145707. The reversal of 2145699 is 9965412.

2145699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2145699 - 2⁴ = 2145683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3487 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (259350).

2^2145699 is an apocalyptic number.

2145699 is a deficient number, since it is larger than the sum of its proper divisors (966501).

2145699 is a wasteful number, since it uses less digits than its factorization.

2145699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 991 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2145699 is about 1464.8204668150. The cubic root of 2145699 is about 128.9801664117.

The spelling of 2145699 in words is "two million, one hundred forty-five thousand, six hundred ninety-nine".