65398005 has 24 divisors (see below), whose sum is σ = 114486840. Its totient is φ = 34531200.

The previous prime is 65397989. The next prime is 65398027. The reversal of 65398005 is 50089356.

It can be written as a sum of positive squares in 4 ways, for example, as 15186609 + 50211396 = 3897^2 + 7086^2 .

It is not a de Polignac number, because 65398005 - 2⁴ = 65397989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2650 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (4770285).

Almost surely, 2^65398005 is an apocalyptic number.

It is an amenable number.

65398005 is a deficient number, since it is larger than the sum of its proper divisors (49088835).

65398005 is a wasteful number, since it uses less digits than its factorization.

65398005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14501 (or 14498 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 65398005 is about 8086.9033010170. The cubic root of 65398005 is about 402.8915572898.

The spelling of 65398005 in words is "sixty-five million, three hundred ninety-eight thousand, five".