65498905 has 4 divisors (see below), whose sum is σ = 78598692. Its totient is φ = 52399120.

The previous prime is 65498897. The next prime is 65498921. The reversal of 65498905 is 50989456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36252441 + 29246464 = 6021^2 + 5408^2 .

It is not a de Polignac number, because 65498905 - 2³ = 65498897 is a prime.

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

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 6549886 + ... + 6549895.

It is an arithmetic number, because the mean of its divisors is an integer number (19649673).

Almost surely, 2^65498905 is an apocalyptic number.

It is an amenable number.

65498905 is a deficient number, since it is larger than the sum of its proper divisors (13099787).

65498905 is a wasteful number, since it uses less digits than its factorization.

65498905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099786.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 65498905 is about 8093.1393785107. The cubic root of 65498905 is about 403.0986526458.

The spelling of 65498905 in words is "sixty-five million, four hundred ninety-eight thousand, nine hundred five".