68634831 has 8 divisors (see below), whose sum is σ = 96896304. Its totient is φ = 43064960.

The previous prime is 68634823. The next prime is 68634833. The reversal of 68634831 is 13843686.

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

It is a cyclic number.

It is not a de Polignac number, because 68634831 - 2³ = 68634823 is a prime.

It is a super-2 number, since 2×68634831² = 9421480052797122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68634831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68634833) 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 7 ways as a sum of consecutive naturals, for example, 672840 + ... + 672941.

It is an arithmetic number, because the mean of its divisors is an integer number (12112038).

Almost surely, 2^68634831 is an apocalyptic number.

68634831 is a deficient number, since it is larger than the sum of its proper divisors (28261473).

68634831 is a wasteful number, since it uses less digits than its factorization.

68634831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345801.

The product of its digits is 82944, while the sum is 39.

The square root of 68634831 is about 8284.6141129204. The cubic root of 68634831 is about 409.4317549345.

The spelling of 68634831 in words is "sixty-eight million, six hundred thirty-four thousand, eight hundred thirty-one".