68284731 has 16 divisors (see below), whose sum is σ = 93671424. Its totient is φ = 44222304.

The previous prime is 68284717. The next prime is 68284753. The reversal of 68284731 is 13748286.

It is not a de Polignac number, because 68284731 - 2¹⁰ = 68283707 is a prime.

It is a super-2 number, since 2×68284731² = 9325608975484722, 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 68284731.

It is not an unprimeable number, because it can be changed into a prime (68284331) 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 15 ways as a sum of consecutive naturals, for example, 24070 + ... + 26756.

It is an arithmetic number, because the mean of its divisors is an integer number (5854464).

Almost surely, 2^68284731 is an apocalyptic number.

68284731 is a deficient number, since it is larger than the sum of its proper divisors (25386693).

68284731 is a wasteful number, since it uses less digits than its factorization.

68284731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930.

The product of its digits is 64512, while the sum is 39.

The square root of 68284731 is about 8263.4575693229. The cubic root of 68284731 is about 408.7344099021.

The spelling of 68284731 in words is "sixty-eight million, two hundred eighty-four thousand, seven hundred thirty-one".