68626757 has 4 divisors (see below), whose sum is σ = 68744256. Its totient is φ = 68509260.

The previous prime is 68626751. The next prime is 68626759. The reversal of 68626757 is 75762686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68626757 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 (68626751) 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 3 ways as a sum of consecutive naturals, for example, 57869 + ... + 59042.

It is an arithmetic number, because the mean of its divisors is an integer number (17186064).

Almost surely, 2^68626757 is an apocalyptic number.

It is an amenable number.

68626757 is a deficient number, since it is larger than the sum of its proper divisors (117499).

68626757 is a wasteful number, since it uses less digits than its factorization.

68626757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117498.

The product of its digits is 846720, while the sum is 47.

The square root of 68626757 is about 8284.1268097489. The cubic root of 68626757 is about 409.4156995217.

The spelling of 68626757 in words is "sixty-eight million, six hundred twenty-six thousand, seven hundred fifty-seven".