68273537 has 2 divisors, whose sum is σ = 68273538. Its totient is φ = 68273536.

The previous prime is 68273533. The next prime is 68273587. The reversal of 68273537 is 73537286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 524176 = 8231^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 68273537 - 2² = 68273533 is a prime.

It is a super-2 number, since 2×68273537² = 9322551708980738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68273494 and 68273503.

It is not a weakly prime, because it can be changed into another prime (68273531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34136768 + 34136769.

It is an arithmetic number, because the mean of its divisors is an integer number (34136769).

Almost surely, 2^68273537 is an apocalyptic number.

It is an amenable number.

68273537 is a deficient number, since it is larger than the sum of its proper divisors (1).

68273537 is an equidigital number, since it uses as much as digits as its factorization.

68273537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 68273537 is about 8262.7802221770. The cubic root of 68273537 is about 408.7120739032.

The spelling of 68273537 in words is "sixty-eight million, two hundred seventy-three thousand, five hundred thirty-seven".