68519744 has 14 divisors (see below), whose sum is σ = 135968994. Its totient is φ = 34259840.

The previous prime is 68519743. The next prime is 68519753. The reversal of 68519744 is 44791586.

It can be written as a sum of positive squares in only one way, i.e., 53465344 + 15054400 = 7312^2 + 3880^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68519695 and 68519704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68519743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535247 + ... + 535374.

It is an arithmetic number, because the mean of its divisors is an integer number (9712071).

Almost surely, 2^68519744 is an apocalyptic number.

68519744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68519744 is a deficient number, since it is larger than the sum of its proper divisors (67449250).

68519744 is a wasteful number, since it uses less digits than its factorization.

68519744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070633 (or 1070623 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 68519744 is about 8277.6653713472. The cubic root of 68519744 is about 409.2027816208.

The spelling of 68519744 in words is "sixty-eight million, five hundred nineteen thousand, seven hundred forty-four".