65438438 has 8 divisors (see below), whose sum is σ = 105708288. Its totient is φ = 30202344.

The previous prime is 65438393. The next prime is 65438447. The reversal of 65438438 is 83483456.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 65438395 and 65438404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258406 + ... + 1258457.

It is an arithmetic number, because the mean of its divisors is an integer number (13213536).

Almost surely, 2^65438438 is an apocalyptic number.

65438438 is a deficient number, since it is larger than the sum of its proper divisors (40269850).

65438438 is a wasteful number, since it uses less digits than its factorization.

65438438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516878.

The product of its digits is 276480, while the sum is 41.

The square root of 65438438 is about 8089.4028209751. The cubic root of 65438438 is about 402.9745708227.

The spelling of 65438438 in words is "sixty-five million, four hundred thirty-eight thousand, four hundred thirty-eight".