68262749 has 8 divisors (see below), whose sum is σ = 69653760. Its totient is φ = 66882816.

The previous prime is 68262739. The next prime is 68262751. The reversal of 68262749 is 94726286.

68262749 = 213² + 214² + ... + 598².

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 68262749 - 2¹² = 68258653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68262739) 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, 10292 + ... + 15570.

It is an arithmetic number, because the mean of its divisors is an integer number (8706720).

Almost surely, 2^68262749 is an apocalyptic number.

It is an amenable number.

68262749 is a deficient number, since it is larger than the sum of its proper divisors (1391011).

68262749 is a wasteful number, since it uses less digits than its factorization.

68262749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539.

The product of its digits is 290304, while the sum is 44.

The square root of 68262749 is about 8262.1273894803. The cubic root of 68262749 is about 408.6905457079.

The spelling of 68262749 in words is "sixty-eight million, two hundred sixty-two thousand, seven hundred forty-nine".