68705351 has 32 divisors (see below), whose sum is σ = 83897856. Its totient is φ = 55440000.

The previous prime is 68705341. The next prime is 68705383. The reversal of 68705351 is 15350786.

It is a de Polignac number, because none of the positive numbers 2^k-68705351 is a prime.

It is a super-4 number, since 4×68705351⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68705341) 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 31 ways as a sum of consecutive naturals, for example, 680201 + ... + 680301.

It is an arithmetic number, because the mean of its divisors is an integer number (2621808).

Almost surely, 2^68705351 is an apocalyptic number.

68705351 is a deficient number, since it is larger than the sum of its proper divisors (15192505).

68705351 is a wasteful number, since it uses less digits than its factorization.

68705351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 68705351 is about 8288.8691025978. The cubic root of 68705351 is about 409.5719327609.

It can be divided in two parts, 6870 and 5351, that added together give a palindrome (12221).

The spelling of 68705351 in words is "sixty-eight million, seven hundred five thousand, three hundred fifty-one".