65426 has 4 divisors (see below), whose sum is σ = 98142. Its totient is φ = 32712.

The previous prime is 65423. The next prime is 65437. The reversal of 65426 is 62456.

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., 55225 + 10201 = 235^2 + 101^2 .

It is a super-2 number, since 2×65426² = 8561122952, which contains 22 as substring.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (65423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16355 + ... + 16358.

2⁶⁵⁴²⁶ is an apocalyptic number.

65426 is a deficient number, since it is larger than the sum of its proper divisors (32716).

65426 is a wasteful number, since it uses less digits than its factorization.

65426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32715.

The product of its digits is 1440, while the sum is 23.

The square root of 65426 is about 255.7850660222. The cubic root of 65426 is about 40.2949037841.

Adding to 65426 its product of digits (1440), we get a palindrome (66866).

The spelling of 65426 in words is "sixty-five thousand, four hundred twenty-six".