61646532 has 48 divisors (see below), whose sum is σ = 150740352. Its totient is φ = 19571200.

The previous prime is 61646513. The next prime is 61646537. The reversal of 61646532 is 23564616.

61646532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61646493 and 61646502.

It is not an unprimeable number, because it can be changed into a prime (61646537) 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 15 ways as a sum of consecutive naturals, for example, 110398 + ... + 110954.

It is an arithmetic number, because the mean of its divisors is an integer number (3140424).

Almost surely, 2^61646532 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 61646532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75370176).

61646532 is an abundant number, since it is smaller than the sum of its proper divisors (89093820).

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

61646532 is a wasteful number, since it uses less digits than its factorization.

61646532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 986 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 61646532 is about 7851.5305514275. The cubic root of 61646532 is about 395.0355829719.

The spelling of 61646532 in words is "sixty-one million, six hundred forty-six thousand, five hundred thirty-two".