68216903 has 8 divisors (see below), whose sum is σ = 74720880. Its totient is φ = 61989760.

The previous prime is 68216879. The next prime is 68216947. The reversal of 68216903 is 30961286.

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 68216903 - 2¹⁰ = 68215879 is a prime.

It is a super-2 number, since 2×68216903² = 9307091709822818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68216983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68693 + ... + 69678.

It is an arithmetic number, because the mean of its divisors is an integer number (9340110).

Almost surely, 2^68216903 is an apocalyptic number.

68216903 is a deficient number, since it is larger than the sum of its proper divisors (6503977).

68216903 is a wasteful number, since it uses less digits than its factorization.

68216903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138417.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 68216903 is about 8259.3524564581. The cubic root of 68216903 is about 408.5990315551.

The spelling of 68216903 in words is "sixty-eight million, two hundred sixteen thousand, nine hundred three".