653789745 has 32 divisors (see below), whose sum is σ = 1328336640. Its totient is φ = 298874880.

The previous prime is 653789681. The next prime is 653789749. The reversal of 653789745 is 547987356.

It is not a de Polignac number, because 653789745 - 2⁶ = 653789681 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 653789691 and 653789700.

It is not an unprimeable number, because it can be changed into a prime (653789749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344976 + ... + 346865.

It is an arithmetic number, because the mean of its divisors is an integer number (41510520).

Almost surely, 2^653789745 is an apocalyptic number.

It is an amenable number.

653789745 is an abundant number, since it is smaller than the sum of its proper divisors (674546895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653789745 is a wasteful number, since it uses less digits than its factorization.

653789745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691862 (or 691856 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 653789745 is about 25569.3125640874. The cubic root of 653789745 is about 867.9193442473.

The spelling of 653789745 in words is "six hundred fifty-three million, seven hundred eighty-nine thousand, seven hundred forty-five".