65438457 has 16 divisors (see below), whose sum is σ = 105581952. Its totient is φ = 35193600.

The previous prime is 65438453. The next prime is 65438467. The reversal of 65438457 is 75483456.

It is not a de Polignac number, because 65438457 - 2² = 65438453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65438453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91294 + ... + 92007.

It is an arithmetic number, because the mean of its divisors is an integer number (6598872).

Almost surely, 2^65438457 is an apocalyptic number.

It is an amenable number.

65438457 is a deficient number, since it is larger than the sum of its proper divisors (40143495).

65438457 is a wasteful number, since it uses less digits than its factorization.

65438457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183328.

The product of its digits is 403200, while the sum is 42.

The square root of 65438457 is about 8089.4039953510. The cubic root of 65438457 is about 402.9746098238.

The spelling of 65438457 in words is "sixty-five million, four hundred thirty-eight thousand, four hundred fifty-seven".