68495779 has 24 divisors (see below), whose sum is σ = 80759808. Its totient is φ = 57579120.

The previous prime is 68495773. The next prime is 68495783. The reversal of 68495779 is 97759486.

It is not a de Polignac number, because 68495779 - 2⁹ = 68495267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68495773) 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 23 ways as a sum of consecutive naturals, for example, 186454 + ... + 186820.

It is an arithmetic number, because the mean of its divisors is an integer number (3364992).

Almost surely, 2^68495779 is an apocalyptic number.

68495779 is a deficient number, since it is larger than the sum of its proper divisors (12264029).

68495779 is a wasteful number, since it uses less digits than its factorization.

68495779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 444 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The square root of 68495779 is about 8276.2176747594. The cubic root of 68495779 is about 409.1550693966.

It can be divided in two parts, 684 and 95779, that multiplied together give a square (65512836 = 8094²).

The spelling of 68495779 in words is "sixty-eight million, four hundred ninety-five thousand, seven hundred seventy-nine".