68427451 has 4 divisors (see below), whose sum is σ = 68445000. Its totient is φ = 68409904.

The previous prime is 68427409. The next prime is 68427481. The reversal of 68427451 is 15472486.

68427451 is a nontrivial binomial coefficient, being equal to C(11699, 2).

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

It is not a de Polignac number, because 68427451 - 2¹³ = 68419259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68427451.

It is not an unprimeable number, because it can be changed into a prime (68427481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (17111250).

Almost surely, 2^68427451 is an apocalyptic number.

68427451 is the 11698-th triangular number.

68427451 is the 3900-th centered nonagonal number.

68427451 is a deficient number, since it is larger than the sum of its proper divisors (17549).

68427451 is a wasteful number, since it uses less digits than its factorization.

68427451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17548.

The product of its digits is 53760, while the sum is 37.

The square root of 68427451 is about 8272.0886721553. The cubic root of 68427451 is about 409.0189731814.

The spelling of 68427451 in words is "sixty-eight million, four hundred twenty-seven thousand, four hundred fifty-one".