654852749 has 4 divisors (see below), whose sum is σ = 655566240. Its totient is φ = 654139260.

The previous prime is 654852721. The next prime is 654852787. The reversal of 654852749 is 947258456.

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 a de Polignac number, because none of the positive numbers 2^k-654852749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 654852697 and 654852706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654851749) 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, 355367 + ... + 357204.

It is an arithmetic number, because the mean of its divisors is an integer number (163891560).

Almost surely, 2^654852749 is an apocalyptic number.

It is an amenable number.

654852749 is a deficient number, since it is larger than the sum of its proper divisors (713491).

654852749 is an equidigital number, since it uses as much as digits as its factorization.

654852749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713490.

The product of its digits is 2419200, while the sum is 50.

The square root of 654852749 is about 25590.0908361029. The cubic root of 654852749 is about 868.3894761055.

The spelling of 654852749 in words is "six hundred fifty-four million, eight hundred fifty-two thousand, seven hundred forty-nine".