65947842 has 24 divisors (see below), whose sum is σ = 143217516. Its totient is φ = 21931776.

The previous prime is 65947837. The next prime is 65947859. The reversal of 65947842 is 24874956.

It is a happy number.

65947842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 62110161 + 3837681 = 7881^2 + 1959^2 .

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 11 ways as a sum of consecutive naturals, for example, 4218 + ... + 12234.

Almost surely, 2^65947842 is an apocalyptic number.

65947842 is an abundant number, since it is smaller than the sum of its proper divisors (77269674).

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

65947842 is a wasteful number, since it uses less digits than its factorization.

65947842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482 (or 8479 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 65947842 is about 8120.8276671778. The cubic root of 65947842 is about 404.0175179477.

The spelling of 65947842 in words is "sixty-five million, nine hundred forty-seven thousand, eight hundred forty-two".