65480819 has 4 divisors (see below), whose sum is σ = 65996544. Its totient is φ = 64965096.

The previous prime is 65480803. The next prime is 65480827. The reversal of 65480819 is 91808456.

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

It is a cyclic number.

It is not a de Polignac number, because 65480819 - 2⁴ = 65480803 is a prime.

It is a super-2 number, since 2×65480819² = 8575475313821522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65480879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257672 + ... + 257925.

It is an arithmetic number, because the mean of its divisors is an integer number (16499136).

Almost surely, 2^65480819 is an apocalyptic number.

65480819 is a deficient number, since it is larger than the sum of its proper divisors (515725).

65480819 is a wasteful number, since it uses less digits than its factorization.

65480819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515724.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 65480819 is about 8092.0219352150. The cubic root of 65480819 is about 403.0615471228.

The spelling of 65480819 in words is "sixty-five million, four hundred eighty thousand, eight hundred nineteen".