68625757 has 4 divisors (see below), whose sum is σ = 68719360. Its totient is φ = 68532156.

The previous prime is 68625751. The next prime is 68625761. The reversal of 68625757 is 75752686.

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 not a de Polignac number, because 68625757 - 2³ = 68625749 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 (68625751) 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 3 ways as a sum of consecutive naturals, for example, 45693 + ... + 47170.

It is an arithmetic number, because the mean of its divisors is an integer number (17179840).

Almost surely, 2^68625757 is an apocalyptic number.

It is an amenable number.

68625757 is a deficient number, since it is larger than the sum of its proper divisors (93603).

68625757 is an equidigital number, since it uses as much as digits as its factorization.

68625757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93602.

The product of its digits is 705600, while the sum is 46.

The square root of 68625757 is about 8284.0664531376. The cubic root of 68625757 is about 409.4137109014.

The spelling of 68625757 in words is "sixty-eight million, six hundred twenty-five thousand, seven hundred fifty-seven".