652740993 has 24 divisors (see below), whose sum is σ = 999499176. Its totient is φ = 409075200.

The previous prime is 652740971. The next prime is 652741007. The reversal of 652740993 is 399047256.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77316849 + 575424144 = 8793^2 + 23988^2 .

It is a de Polignac number, because none of the positive numbers 2^k-652740993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (652740923) 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 23 ways as a sum of consecutive naturals, for example, 160323 + ... + 164343.

It is an arithmetic number, because the mean of its divisors is an integer number (41645799).

Almost surely, 2^652740993 is an apocalyptic number.

It is an amenable number.

652740993 is a deficient number, since it is larger than the sum of its proper divisors (346758183).

652740993 is a wasteful number, since it uses less digits than its factorization.

652740993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 652740993 is about 25548.7963121553. The cubic root of 652740993 is about 867.4550159246.

The spelling of 652740993 in words is "six hundred fifty-two million, seven hundred forty thousand, nine hundred ninety-three".