65738 has 4 divisors (see below), whose sum is σ = 98610. Its totient is φ = 32868.

The previous prime is 65731. The next prime is 65761. The reversal of 65738 is 83756.

65738 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54289 + 11449 = 233^2 + 107^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65738.

It is not an unprimeable number, because it can be changed into a prime (65731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16433 + ... + 16436.

2⁶⁵⁷³⁸ is an apocalyptic number.

65738 is a deficient number, since it is larger than the sum of its proper divisors (32872).

65738 is a wasteful number, since it uses less digits than its factorization.

65738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32871.

The product of its digits is 5040, while the sum is 29.

The square root of 65738 is about 256.3942277041. The cubic root of 65738 is about 40.3588542957.

The spelling of 65738 in words is "sixty-five thousand, seven hundred thirty-eight".