68720276 has 6 divisors (see below), whose sum is σ = 120260490. Its totient is φ = 34360136.

The previous prime is 68720269. The next prime is 68720293. The reversal of 68720276 is 67202786.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 9060100 = 7724^2 + 3010^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8590031 + ... + 8590038.

It is an arithmetic number, because the mean of its divisors is an integer number (20043415).

Almost surely, 2^68720276 is an apocalyptic number.

It is an amenable number.

68720276 is a deficient number, since it is larger than the sum of its proper divisors (51540214).

68720276 is a wasteful number, since it uses less digits than its factorization.

68720276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17180073 (or 17180071 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 68720276 is about 8289.7693574671. The cubic root of 68720276 is about 409.6015879887.

The spelling of 68720276 in words is "sixty-eight million, seven hundred twenty thousand, two hundred seventy-six".