61642434 has 32 divisors (see below), whose sum is σ = 144337536. Its totient is φ = 17182080.

The previous prime is 61642417. The next prime is 61642447. The reversal of 61642434 is 43424616.

61642434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 16177 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (4510548).

Almost surely, 2^61642434 is an apocalyptic number.

61642434 is an abundant number, since it is smaller than the sum of its proper divisors (82695102).

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

61642434 is a wasteful number, since it uses less digits than its factorization.

61642434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35850.

The product of its digits is 13824, while the sum is 30.

The square root of 61642434 is about 7851.2695788643. The cubic root of 61642434 is about 395.0268293479.

The spelling of 61642434 in words is "sixty-one million, six hundred forty-two thousand, four hundred thirty-four".