2023649 has 8 divisors (see below), whose sum is σ = 2161920. Its totient is φ = 1890000.

The previous prime is 2023639. The next prime is 2023661. The reversal of 2023649 is 9463202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2023649 - 2⁸ = 2023393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2023639) 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 7 ways as a sum of consecutive naturals, for example, 227 + ... + 2024.

It is an arithmetic number, because the mean of its divisors is an integer number (270240).

2^2023649 is an apocalyptic number.

2023649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2023649 is a deficient number, since it is larger than the sum of its proper divisors (138271).

2023649 is a wasteful number, since it uses less digits than its factorization.

2023649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2023649 is about 1422.5501748620. The cubic root of 2023649 is about 126.4867582884.

The spelling of 2023649 in words is "two million, twenty-three thousand, six hundred forty-nine".