65457138 has 8 divisors (see below), whose sum is σ = 130914288. Its totient is φ = 21819044.

The previous prime is 65457127. The next prime is 65457167. The reversal of 65457138 is 83175456.

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

65457138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 65457096 and 65457105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5454756 + ... + 5454767.

It is an arithmetic number, because the mean of its divisors is an integer number (16364286).

Almost surely, 2^65457138 is an apocalyptic number.

65457138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65457138 is a wasteful number, since it uses less digits than its factorization.

65457138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909528.

The product of its digits is 100800, while the sum is 39.

The square root of 65457138 is about 8090.5585715697. The cubic root of 65457138 is about 403.0129524783.

The spelling of 65457138 in words is "sixty-five million, four hundred fifty-seven thousand, one hundred thirty-eight".