68616651 has 8 divisors (see below), whose sum is σ = 92298960. Its totient is φ = 45339392.

The previous prime is 68616589. The next prime is 68616679. The reversal of 68616651 is 15661686.

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 68616651 - 2¹⁰ = 68615627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68616551) 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 7 ways as a sum of consecutive naturals, for example, 100866 + ... + 101543.

It is an arithmetic number, because the mean of its divisors is an integer number (11537370).

Almost surely, 2^68616651 is an apocalyptic number.

68616651 is a deficient number, since it is larger than the sum of its proper divisors (23682309).

68616651 is a wasteful number, since it uses less digits than its factorization.

68616651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202525.

The product of its digits is 51840, while the sum is 39.

The square root of 68616651 is about 8283.5168256001. The cubic root of 68616651 is about 409.3956016359.

The spelling of 68616651 in words is "sixty-eight million, six hundred sixteen thousand, six hundred fifty-one".