647532 has 18 divisors (see below), whose sum is σ = 1636908. Its totient is φ = 215832.

The previous prime is 647531. The next prime is 647551. The reversal of 647532 is 235746.

It is a happy number.

647532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

647532 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 647496 and 647505.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647532.

It is not an unprimeable number, because it can be changed into a prime (647531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8958 + ... + 9029.

2⁶⁴⁷⁵³² is an apocalyptic number.

It is an amenable number.

647532 is an abundant number, since it is smaller than the sum of its proper divisors (989376).

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

647532 is a wasteful number, since it uses less digits than its factorization.

647532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17997 (or 17992 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 647532 is about 804.6937305584. The cubic root of 647532 is about 86.5141367074.

The spelling of 647532 in words is "six hundred forty-seven thousand, five hundred thirty-two".