65915147 has 2 divisors, whose sum is σ = 65915148. Its totient is φ = 65915146.

The previous prime is 65915119. The next prime is 65915149. The reversal of 65915147 is 74151956.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65915147 is a prime.

Together with 65915149, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3891368 and since 65915147 and 3891368 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65915147.

It is not a weakly prime, because it can be changed into another prime (65915149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32957573 + 32957574.

It is an arithmetic number, because the mean of its divisors is an integer number (32957574).

Almost surely, 2^65915147 is an apocalyptic number.

65915147 is a deficient number, since it is larger than the sum of its proper divisors (1).

65915147 is an equidigital number, since it uses as much as digits as its factorization.

65915147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 65915147 is about 8118.8143838864. The cubic root of 65915147 is about 403.9507402444.

The spelling of 65915147 in words is "sixty-five million, nine hundred fifteen thousand, one hundred forty-seven".