65257903 has 4 divisors (see below), whose sum is σ = 65297128. Its totient is φ = 65218680.

The previous prime is 65257891. The next prime is 65257919. The reversal of 65257903 is 30975256.

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 65257903 - 2²⁵ = 31703471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65267903) 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, 17001 + ... + 20482.

It is an arithmetic number, because the mean of its divisors is an integer number (16324282).

Almost surely, 2^65257903 is an apocalyptic number.

65257903 is a deficient number, since it is larger than the sum of its proper divisors (39225).

65257903 is a wasteful number, since it uses less digits than its factorization.

65257903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39224.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 65257903 is about 8078.2363793095. The cubic root of 65257903 is about 402.6036470343.

The spelling of 65257903 in words is "sixty-five million, two hundred fifty-seven thousand, nine hundred three".