68451737 has 6 divisors (see below), whose sum is σ = 72244458. Its totient is φ = 64848672.

The previous prime is 68451731. The next prime is 68451781. The reversal of 68451737 is 73715486.

It can be written as a sum of positive squares in only one way, i.e., 47831056 + 20620681 = 6916^2 + 4541^2 .

It is not a de Polignac number, because 68451737 - 2¹⁸ = 68189593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68451694 and 68451703.

It is not an unprimeable number, because it can be changed into a prime (68451731) 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 5 ways as a sum of consecutive naturals, for example, 94448 + ... + 95169.

It is an arithmetic number, because the mean of its divisors is an integer number (12040743).

Almost surely, 2^68451737 is an apocalyptic number.

It is an amenable number.

68451737 is a deficient number, since it is larger than the sum of its proper divisors (3792721).

68451737 is a wasteful number, since it uses less digits than its factorization.

68451737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189655 (or 189636 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 68451737 is about 8273.5564904097. The cubic root of 68451737 is about 409.0673565894.

The spelling of 68451737 in words is "sixty-eight million, four hundred fifty-one thousand, seven hundred thirty-seven".