68451 has 4 divisors (see below), whose sum is σ = 91272. Its totient is φ = 45632.

The previous prime is 68449. The next prime is 68473. The reversal of 68451 is 15486.

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

It is a cyclic number.

It is not a de Polignac number, because 68451 - 2¹ = 68449 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (68491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11406 + ... + 11411.

It is an arithmetic number, because the mean of its divisors is an integer number (22818).

2⁶⁸⁴⁵¹ is an apocalyptic number.

68451 is a deficient number, since it is larger than the sum of its proper divisors (22821).

68451 is a wasteful number, since it uses less digits than its factorization.

68451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22820.

The product of its digits is 960, while the sum is 24.

The square root of 68451 is about 261.6314201315. The cubic root of 68451 is about 40.9065888481.

The spelling of 68451 in words is "sixty-eight thousand, four hundred fifty-one".