653729532 has 12 divisors (see below), whose sum is σ = 1525368936. Its totient is φ = 217909840.

The previous prime is 653729501. The next prime is 653729537. The reversal of 653729532 is 235927356.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653729537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27238719 + ... + 27238742.

It is an arithmetic number, because the mean of its divisors is an integer number (127114078).

Almost surely, 2^653729532 is an apocalyptic number.

It is an amenable number.

653729532 is an abundant number, since it is smaller than the sum of its proper divisors (871639404).

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

653729532 is a wasteful number, since it uses less digits than its factorization.

653729532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54477468 (or 54477466 counting only the distinct ones).

The product of its digits is 340200, while the sum is 42.

The square root of 653729532 is about 25568.1350903815. The cubic root of 653729532 is about 867.8926987637.

The spelling of 653729532 in words is "six hundred fifty-three million, seven hundred twenty-nine thousand, five hundred thirty-two".