68361804 has 36 divisors (see below), whose sum is σ = 197490384. Its totient is φ = 19531872.

The previous prime is 68361803. The next prime is 68361823. The reversal of 68361804 is 40816386.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×68361804² = 9346672492268832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68361803) 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 11 ways as a sum of consecutive naturals, for example, 135387 + ... + 135890.

It is an arithmetic number, because the mean of its divisors is an integer number (5485844).

Almost surely, 2^68361804 is an apocalyptic number.

It is an amenable number.

68361804 is an abundant number, since it is smaller than the sum of its proper divisors (129128580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68361804 is a wasteful number, since it uses less digits than its factorization.

68361804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271294 (or 271289 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68361804 is about 8268.1197378848. The cubic root of 68361804 is about 408.8881316389. Note that the first 3 decimals are identical.

The spelling of 68361804 in words is "sixty-eight million, three hundred sixty-one thousand, eight hundred four".