68763639 has 8 divisors (see below), whose sum is σ = 104782720. Its totient is φ = 39293496.

The previous prime is 68763599. The next prime is 68763647. The reversal of 68763639 is 93636786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68763639 - 2⁷ = 68763511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68765639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637209 + ... + 1637250.

It is an arithmetic number, because the mean of its divisors is an integer number (13097840).

Almost surely, 2^68763639 is an apocalyptic number.

68763639 is a deficient number, since it is larger than the sum of its proper divisors (36019081).

68763639 is a wasteful number, since it uses less digits than its factorization.

68763639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274469.

The product of its digits is 979776, while the sum is 48.

The square root of 68763639 is about 8292.3843977471. The cubic root of 68763639 is about 409.6877237462.

The spelling of 68763639 in words is "sixty-eight million, seven hundred sixty-three thousand, six hundred thirty-nine".