653849 has 4 divisors (see below), whose sum is σ = 747264. Its totient is φ = 560436.

The previous prime is 653831. The next prime is 653879. The reversal of 653849 is 948356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 653849 - 2⁸ = 653593 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 5⁵ + 8⁵ + 3⁹ + 4⁸ + 9⁶ .

It is not an unprimeable number, because it can be changed into a prime (653819) 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 3 ways as a sum of consecutive naturals, for example, 46697 + ... + 46710.

It is an arithmetic number, because the mean of its divisors is an integer number (186816).

2⁶⁵³⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

653849 is a deficient number, since it is larger than the sum of its proper divisors (93415).

653849 is an equidigital number, since it uses as much as digits as its factorization.

653849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93414.

The product of its digits is 25920, while the sum is 35.

The square root of 653849 is about 808.6092999713. The cubic root of 653849 is about 86.7945564199.

The spelling of 653849 in words is "six hundred fifty-three thousand, eight hundred forty-nine".