653671489 has 9 divisors (see below), whose sum is σ = 672789411. Its totient is φ = 635084280.

The previous prime is 653671483. The next prime is 653671531. The reversal of 653671489 is 984176356.

The square root of 653671489 is 25567.

It is a perfect power (a square), and thus also a powerful number.

653671489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 584914225 + 68757264 = 24185^2 + 8292^2 .

It is not a de Polignac number, because 653671489 - 2²⁷ = 519453761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653671483) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 945634 + ... + 946324.

It is an arithmetic number, because the mean of its divisors is an integer number (74754379).

Almost surely, 2^653671489 is an apocalyptic number.

653671489 is the 25567-th square number.

653671489 is the 12784-th centered octagonal number.

It is an amenable number.

653671489 is a deficient number, since it is larger than the sum of its proper divisors (19117922).

653671489 is an frugal number, since it uses more digits than its factorization.

653671489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 728 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The cubic root of 653671489 is about 867.8670120006.

Multiplying 653671489 by its sum of digits (49), we get a square (32029902961 = 178969²).

The spelling of 653671489 in words is "six hundred fifty-three million, six hundred seventy-one thousand, four hundred eighty-nine".