65745147 has 8 divisors (see below), whose sum is σ = 94403344. Its totient is φ = 40458528.

The previous prime is 65745139. The next prime is 65745161. The reversal of 65745147 is 74154756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65745147 - 2³ = 65745139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1685773 = 65745147 / (6 + 5 + 7 + 4 + 5 + 1 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65745107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842848 + ... + 842925.

It is an arithmetic number, because the mean of its divisors is an integer number (11800418).

Almost surely, 2^65745147 is an apocalyptic number.

65745147 is a deficient number, since it is larger than the sum of its proper divisors (28658197).

65745147 is a wasteful number, since it uses less digits than its factorization.

65745147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685789.

The product of its digits is 117600, while the sum is 39.

The square root of 65745147 is about 8108.3381157917. The cubic root of 65745147 is about 403.6031684034.

The spelling of 65745147 in words is "sixty-five million, seven hundred forty-five thousand, one hundred forty-seven".