61684746 has 16 divisors (see below), whose sum is σ = 126379008. Its totient is φ = 20060000.

The previous prime is 61684741. The next prime is 61684757. The reversal of 61684746 is 64748616.

61684746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61684698 and 61684707.

It is not an unprimeable number, because it can be changed into a prime (61684741) 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, 125130 + ... + 125621.

It is an arithmetic number, because the mean of its divisors is an integer number (7898688).

Almost surely, 2^61684746 is an apocalyptic number.

61684746 is an abundant number, since it is smaller than the sum of its proper divisors (64694262).

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

61684746 is a wasteful number, since it uses less digits than its factorization.

61684746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250797.

The product of its digits is 193536, while the sum is 42.

The square root of 61684746 is about 7853.9637126740. The cubic root of 61684746 is about 395.1171921671.

The spelling of 61684746 in words is "sixty-one million, six hundred eighty-four thousand, seven hundred forty-six".