61489212 has 24 divisors (see below), whose sum is σ = 149713536. Its totient is φ = 19605168.

The previous prime is 61489177. The next prime is 61489223. The reversal of 61489212 is 21298416.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111118 + ... + 111669.

It is an arithmetic number, because the mean of its divisors is an integer number (6238064).

Almost surely, 2^61489212 is an apocalyptic number.

It is an amenable number.

61489212 is an abundant number, since it is smaller than the sum of its proper divisors (88224324).

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

61489212 is a wasteful number, since it uses less digits than its factorization.

61489212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222817 (or 222815 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 61489212 is about 7841.5057227550. The cubic root of 61489212 is about 394.6992572739.

The spelling of 61489212 in words is "sixty-one million, four hundred eighty-nine thousand, two hundred twelve".