68072665 has 8 divisors (see below), whose sum is σ = 81731520. Its totient is φ = 54428592.

The previous prime is 68072659. The next prime is 68072671. The reversal of 68072665 is 56627086.

It is an interprime number because it is at equal distance from previous prime (68072659) and next prime (68072671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68072665 - 2⁹ = 68072153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15772 + ... + 19618.

It is an arithmetic number, because the mean of its divisors is an integer number (10216440).

Almost surely, 2^68072665 is an apocalyptic number.

It is an amenable number.

68072665 is a deficient number, since it is larger than the sum of its proper divisors (13658855).

68072665 is a wasteful number, since it uses less digits than its factorization.

68072665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68072665 is about 8250.6160376059. The cubic root of 68072665 is about 408.3108473897.

The spelling of 68072665 in words is "sixty-eight million, seventy-two thousand, six hundred sixty-five".