65847949 has 2 divisors, whose sum is σ = 65847950. Its totient is φ = 65847948.

The previous prime is 65847931. The next prime is 65847979. The reversal of 65847949 is 94974856.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 22155849 = 6610^2 + 4707^2 .

It is a cyclic number.

It is not a de Polignac number, because 65847949 - 2⁹ = 65847437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65847896 and 65847905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65847979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32923974 + 32923975.

It is an arithmetic number, because the mean of its divisors is an integer number (32923975).

Almost surely, 2^65847949 is an apocalyptic number.

It is an amenable number.

65847949 is a deficient number, since it is larger than the sum of its proper divisors (1).

65847949 is an equidigital number, since it uses as much as digits as its factorization.

65847949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 65847949 is about 8114.6749164708. The cubic root of 65847949 is about 403.8134227353.

The spelling of 65847949 in words is "sixty-five million, eight hundred forty-seven thousand, nine hundred forty-nine".