68428618 has 16 divisors (see below), whose sum is σ = 104924160. Its totient is φ = 33458256.

The previous prime is 68428573. The next prime is 68428637. The reversal of 68428618 is 81682486.

It is a super-2 number, since 2×68428618² = 9364951522779848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38023 + ... + 39781.

It is an arithmetic number, because the mean of its divisors is an integer number (6557760).

Almost surely, 2^68428618 is an apocalyptic number.

68428618 is a deficient number, since it is larger than the sum of its proper divisors (36495542).

68428618 is a wasteful number, since it uses less digits than its factorization.

68428618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its digits is 147456, while the sum is 43.

The square root of 68428618 is about 8272.1592102667. The cubic root of 68428618 is about 409.0212983810.

The spelling of 68428618 in words is "sixty-eight million, four hundred twenty-eight thousand, six hundred eighteen".