65304257 has 8 divisors (see below), whose sum is σ = 65897832. Its totient is φ = 64713600.

The previous prime is 65304251. The next prime is 65304263. The reversal of 65304257 is 75240356.

It is an interprime number because it is at equal distance from previous prime (65304251) and next prime (65304263).

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 65141041 = 404^2 + 8071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65304257 - 2⁴ = 65304241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65304251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75773 + ... + 76629.

It is an arithmetic number, because the mean of its divisors is an integer number (8237229).

Almost surely, 2^65304257 is an apocalyptic number.

It is an amenable number.

65304257 is a deficient number, since it is larger than the sum of its proper divisors (593575).

65304257 is a wasteful number, since it uses less digits than its factorization.

65304257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 65304257 is about 8081.1049368264. The cubic root of 65304257 is about 402.6989502932.

The spelling of 65304257 in words is "sixty-five million, three hundred four thousand, two hundred fifty-seven".