68424511 has 4 divisors (see below), whose sum is σ = 68454352. Its totient is φ = 68394672.

The previous prime is 68424509. The next prime is 68424523. The reversal of 68424511 is 11542486.

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 68424511 - 2¹ = 68424509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68424611) 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, 11166 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (17113588).

Almost surely, 2^68424511 is an apocalyptic number.

68424511 is a deficient number, since it is larger than the sum of its proper divisors (29841).

68424511 is a wasteful number, since it uses less digits than its factorization.

68424511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29840.

The product of its digits is 7680, while the sum is 31.

The square root of 68424511 is about 8271.9109642210. The cubic root of 68424511 is about 409.0131152351.

Adding to 68424511 its reverse (11542486), we get a palindrome (79966997).

The spelling of 68424511 in words is "sixty-eight million, four hundred twenty-four thousand, five hundred eleven".