68469531 has 8 divisors (see below), whose sum is σ = 98315280. Its totient is φ = 42135072.

The previous prime is 68469529. The next prime is 68469539. The reversal of 68469531 is 13596486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68469531 - 2¹ = 68469529 is a prime.

It is a super-2 number, since 2×68469531² = 9376153350719922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68469539) 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 in 7 ways as a sum of consecutive naturals, for example, 877776 + ... + 877853.

It is an arithmetic number, because the mean of its divisors is an integer number (12289410).

Almost surely, 2^68469531 is an apocalyptic number.

68469531 is a deficient number, since it is larger than the sum of its proper divisors (29845749).

68469531 is a wasteful number, since it uses less digits than its factorization.

68469531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755645.

The product of its digits is 155520, while the sum is 42.

The square root of 68469531 is about 8274.6317742846. The cubic root of 68469531 is about 409.1027991471.

The spelling of 68469531 in words is "sixty-eight million, four hundred sixty-nine thousand, five hundred thirty-one".