61889000 has 64 divisors (see below), whose sum is σ = 146016000. Its totient is φ = 24552000.

The previous prime is 61888999. The next prime is 61889059. The reversal of 61889000 is 98816.

61889000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 198845 + ... + 199155.

It is an arithmetic number, because the mean of its divisors is an integer number (2281500).

Almost surely, 2^61889000 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 61889000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73008000).

61889000 is an abundant number, since it is smaller than the sum of its proper divisors (84127000).

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

61889000 is a wasteful number, since it uses less digits than its factorization.

61889000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 61889000 is about 7866.9562093608. The cubic root of 61889000 is about 395.5528231142.

The spelling of 61889000 in words is "sixty-one million, eight hundred eighty-nine thousand".