68420063 has 8 divisors (see below), whose sum is σ = 69521760. Its totient is φ = 67327200.

The previous prime is 68420057. The next prime is 68420071. The reversal of 68420063 is 36002486.

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 68420063 - 2⁴ = 68420047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68420003) 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, 14381 + ... + 18537.

It is an arithmetic number, because the mean of its divisors is an integer number (8690220).

Almost surely, 2^68420063 is an apocalyptic number.

68420063 is a deficient number, since it is larger than the sum of its proper divisors (1101697).

68420063 is a wasteful number, since it uses less digits than its factorization.

68420063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 68420063 is about 8271.6420981568. The cubic root of 68420063 is about 409.0042522817.

The spelling of 68420063 in words is "sixty-eight million, four hundred twenty thousand, sixty-three".