65416257 has 24 divisors (see below), whose sum is σ = 99613800. Its totient is φ = 41303808.

The previous prime is 65416213. The next prime is 65416283. The reversal of 65416257 is 75261456.

It is a happy number.

65416257 is a `hidden beast` number, since 6 + 541 + 62 + 57 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2547216 + 62869041 = 1596^2 + 7929^2 .

It is not a de Polignac number, because 65416257 - 2⁶ = 65416193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65416207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11469 + ... + 16197.

It is an arithmetic number, because the mean of its divisors is an integer number (4150575).

Almost surely, 2^65416257 is an apocalyptic number.

It is an amenable number.

65416257 is a deficient number, since it is larger than the sum of its proper divisors (34197543).

65416257 is a wasteful number, since it uses less digits than its factorization.

65416257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4817 (or 4814 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65416257 is about 8088.0317135877. The cubic root of 65416257 is about 402.9290349504.

The spelling of 65416257 in words is "sixty-five million, four hundred sixteen thousand, two hundred fifty-seven".