65862491 has 2 divisors, whose sum is σ = 65862492. Its totient is φ = 65862490.

The previous prime is 65862481. The next prime is 65862521. The reversal of 65862491 is 19426856.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65862491 is a prime.

It is not a weakly prime, because it can be changed into another prime (65862431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32931245 + 32931246.

It is an arithmetic number, because the mean of its divisors is an integer number (32931246).

Almost surely, 2^65862491 is an apocalyptic number.

65862491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65862491 is an equidigital number, since it uses as much as digits as its factorization.

65862491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 65862491 is about 8115.5708979714. The cubic root of 65862491 is about 403.8431468834.

The spelling of 65862491 in words is "sixty-five million, eight hundred sixty-two thousand, four hundred ninety-one".