65278747 has 2 divisors, whose sum is σ = 65278748. Its totient is φ = 65278746.

The previous prime is 65278637. The next prime is 65278757. The reversal of 65278747 is 74787256.

65278747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65278747 is a prime.

It is a super-2 number, since 2×65278747² = 8522629619780018, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 65278697 and 65278706.

It is not a weakly prime, because it can be changed into another prime (65278757) by changing a digit.

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 as a sum of consecutive naturals, namely, 32639373 + 32639374.

It is an arithmetic number, because the mean of its divisors is an integer number (32639374).

Almost surely, 2^65278747 is an apocalyptic number.

65278747 is a deficient number, since it is larger than the sum of its proper divisors (1).

65278747 is an equidigital number, since it uses as much as digits as its factorization.

65278747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 46.

The square root of 65278747 is about 8079.5264093881. The cubic root of 65278747 is about 402.6465076265.

The spelling of 65278747 in words is "sixty-five million, two hundred seventy-eight thousand, seven hundred forty-seven".