61884789 has 16 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 39108608.

The previous prime is 61884763. The next prime is 61884791. The reversal of 61884789 is 98748816.

61884789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61884789 - 2⁷ = 61884661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61884749) 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, 3829 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (5429592).

Almost surely, 2^61884789 is an apocalyptic number.

61884789 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

61884789 is a deficient number, since it is larger than the sum of its proper divisors (24988683).

61884789 is a wasteful number, since it uses less digits than its factorization.

61884789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076.

The product of its digits is 774144, while the sum is 51.

The square root of 61884789 is about 7866.6885663537. The cubic root of 61884789 is about 395.5438516184.

The spelling of 61884789 in words is "sixty-one million, eight hundred eighty-four thousand, seven hundred eighty-nine".