61989324 has 48 divisors (see below), whose sum is σ = 158887680. Its totient is φ = 18722880.

The previous prime is 61989289. The next prime is 61989329. The reversal of 61989324 is 42398916.

It is not an unprimeable number, because it can be changed into a prime (61989329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667 + ... + 11154.

It is an arithmetic number, because the mean of its divisors is an integer number (3310160).

Almost surely, 2^61989324 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 61989324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79443840).

61989324 is an abundant number, since it is smaller than the sum of its proper divisors (96898356).

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

61989324 is a wasteful number, since it uses less digits than its factorization.

61989324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870 (or 11868 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 61989324 is about 7873.3299181477. The cubic root of 61989324 is about 395.7664422173.

The spelling of 61989324 in words is "sixty-one million, nine hundred eighty-nine thousand, three hundred twenty-four".