61384470 has 128 divisors (see below), whose sum is σ = 179159040. Its totient is φ = 13157760.

The previous prime is 61384469. The next prime is 61384513. The reversal of 61384470 is 7448316.

61384470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 342841 + ... + 343019.

It is an arithmetic number, because the mean of its divisors is an integer number (1399680).

Almost surely, 2^61384470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61384470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89579520).

61384470 is an abundant number, since it is smaller than the sum of its proper divisors (117774570).

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

61384470 is a wasteful number, since it uses less digits than its factorization.

61384470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

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

The square root of 61384470 is about 7834.8241843707. The cubic root of 61384470 is about 394.4750169313.

The spelling of 61384470 in words is "sixty-one million, three hundred eighty-four thousand, four hundred seventy".