68503616 has 14 divisors (see below), whose sum is σ = 135936990. Its totient is φ = 34251776.

The previous prime is 68503609. The next prime is 68503619. The reversal of 68503616 is 61630586.

It can be written as a sum of positive squares in only one way, i.e., 65545216 + 2958400 = 8096^2 + 1720^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68503619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535121 + ... + 535248.

It is an arithmetic number, because the mean of its divisors is an integer number (9709785).

Almost surely, 2^68503616 is an apocalyptic number.

It is an amenable number.

68503616 is a deficient number, since it is larger than the sum of its proper divisors (67433374).

68503616 is a wasteful number, since it uses less digits than its factorization.

68503616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070381 (or 1070371 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 68503616 is about 8276.6911262895. The cubic root of 68503616 is about 409.1706734043.

The spelling of 68503616 in words is "sixty-eight million, five hundred three thousand, six hundred sixteen".