65480257 has 4 divisors (see below), whose sum is σ = 65711920. Its totient is φ = 65248596.

The previous prime is 65480227. The next prime is 65480279. The reversal of 65480257 is 75208456.

It is a happy number.

65480257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65480257 - 2²³ = 57091649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65480227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115407 + ... + 115972.

It is an arithmetic number, because the mean of its divisors is an integer number (16427980).

Almost surely, 2^65480257 is an apocalyptic number.

It is an amenable number.

65480257 is a deficient number, since it is larger than the sum of its proper divisors (231663).

65480257 is a wasteful number, since it uses less digits than its factorization.

65480257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231662.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 65480257 is about 8091.9872095796. The cubic root of 65480257 is about 403.0603940053.

The spelling of 65480257 in words is "sixty-five million, four hundred eighty thousand, two hundred fifty-seven".