68039751 has 8 divisors (see below), whose sum is σ = 97698160. Its totient is φ = 41870592.

The previous prime is 68039749. The next prime is 68039759. The reversal of 68039751 is 15793086.

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

It is not a de Polignac number, because 68039751 - 2¹ = 68039749 is a prime.

It is a super-2 number, since 2×68039751² = 9258815432284002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1744609 = 68039751 / (6 + 8 + 0 + 3 + 9 + 7 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68039759) 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 7 ways as a sum of consecutive naturals, for example, 872266 + ... + 872343.

It is an arithmetic number, because the mean of its divisors is an integer number (12212270).

Almost surely, 2^68039751 is an apocalyptic number.

68039751 is a deficient number, since it is larger than the sum of its proper divisors (29658409).

68039751 is a wasteful number, since it uses less digits than its factorization.

68039751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744625.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 68039751 is about 8248.6211575026. The cubic root of 68039751 is about 408.2450289499.

The spelling of 68039751 in words is "sixty-eight million, thirty-nine thousand, seven hundred fifty-one".