68519755 has 4 divisors (see below), whose sum is σ = 82223712. Its totient is φ = 54815800.

The previous prime is 68519753. The next prime is 68519797. The reversal of 68519755 is 55791586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68519755 - 2¹ = 68519753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68519753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6851971 + ... + 6851980.

It is an arithmetic number, because the mean of its divisors is an integer number (20555928).

Almost surely, 2^68519755 is an apocalyptic number.

68519755 is a deficient number, since it is larger than the sum of its proper divisors (13703957).

68519755 is a wasteful number, since it uses less digits than its factorization.

68519755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13703956.

The product of its digits is 378000, while the sum is 46.

The square root of 68519755 is about 8277.6660357857. Note that the first 3 decimals coincide. The cubic root of 68519755 is about 409.2028035183.

The spelling of 68519755 in words is "sixty-eight million, five hundred nineteen thousand, seven hundred fifty-five".