65732839 has 2 divisors, whose sum is σ = 65732840. Its totient is φ = 65732838.

The previous prime is 65732833. The next prime is 65732851. The reversal of 65732839 is 93823756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65732839 - 2¹³ = 65724647 is a prime.

It is a super-2 number, since 2×65732839² = 8641612245999842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65732795 and 65732804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65732833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32866419 + 32866420.

It is an arithmetic number, because the mean of its divisors is an integer number (32866420).

Almost surely, 2^65732839 is an apocalyptic number.

65732839 is a deficient number, since it is larger than the sum of its proper divisors (1).

65732839 is an equidigital number, since it uses as much as digits as its factorization.

65732839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 65732839 is about 8107.5791084639. The cubic root of 65732839 is about 403.5779809534.

The spelling of 65732839 in words is "sixty-five million, seven hundred thirty-two thousand, eight hundred thirty-nine".