61322784 has 48 divisors (see below), whose sum is σ = 167977152. Its totient is φ = 19551488.

The previous prime is 61322783. The next prime is 61322809. The reversal of 61322784 is 48722316.

61322784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (61322783) 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 7 ways as a sum of consecutive naturals, for example, 11679 + ... + 16094.

It is an arithmetic number, because the mean of its divisors is an integer number (3499524).

Almost surely, 2^61322784 is an apocalyptic number.

It is an amenable number.

61322784 is an abundant number, since it is smaller than the sum of its proper divisors (106654368).

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

61322784 is a wasteful number, since it uses less digits than its factorization.

61322784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27809 (or 27801 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 61322784 is about 7830.8865398498. The cubic root of 61322784 is about 394.3428350647.

The spelling of 61322784 in words is "sixty-one million, three hundred twenty-two thousand, seven hundred eighty-four".