63491532 has 96 divisors (see below), whose sum is σ = 171460800. Its totient is φ = 18112512.

The previous prime is 63491507. The next prime is 63491539. The reversal of 63491532 is 23519436.

It is a junction number, because it is equal to n+sod(n) for n = 63491493 and 63491502.

It is not an unprimeable number, because it can be changed into a prime (63491539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235894 + ... + 236162.

It is an arithmetic number, because the mean of its divisors is an integer number (1786050).

Almost surely, 2^63491532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63491532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85730400).

63491532 is an abundant number, since it is smaller than the sum of its proper divisors (107969268).

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

63491532 is a wasteful number, since it uses less digits than its factorization.

63491532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 393 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 63491532 is about 7968.1573779639. The cubic root of 63491532 is about 398.9378738832.

The spelling of 63491532 in words is "sixty-three million, four hundred ninety-one thousand, five hundred thirty-two".