65172847 has 2 divisors, whose sum is σ = 65172848. Its totient is φ = 65172846.

The previous prime is 65172841. The next prime is 65172853. The reversal of 65172847 is 74827156.

It is a balanced prime because it is at equal distance from previous prime (65172841) and next prime (65172853).

It is a cyclic number.

It is not a de Polignac number, because 65172847 - 2²³ = 56784239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65172841) 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 as a sum of consecutive naturals, namely, 32586423 + 32586424.

It is an arithmetic number, because the mean of its divisors is an integer number (32586424).

Almost surely, 2^65172847 is an apocalyptic number.

65172847 is a deficient number, since it is larger than the sum of its proper divisors (1).

65172847 is an equidigital number, since it uses as much as digits as its factorization.

65172847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 65172847 is about 8072.9701473497. The cubic root of 65172847 is about 402.4286554873.

The spelling of 65172847 in words is "sixty-five million, one hundred seventy-two thousand, eight hundred forty-seven".