68200840 has 16 divisors (see below), whose sum is σ = 153451980. Its totient is φ = 27280320.

The previous prime is 68200829. The next prime is 68200843. The reversal of 68200840 is 4800286.

It can be written as a sum of positive squares in 2 ways, for example, as 63457156 + 4743684 = 7966^2 + 2178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68200799 and 68200808.

It is not an unprimeable number, because it can be changed into a prime (68200843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852471 + ... + 852550.

Almost surely, 2^68200840 is an apocalyptic number.

It is an amenable number.

68200840 is an abundant number, since it is smaller than the sum of its proper divisors (85251140).

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

68200840 is a wasteful number, since it uses less digits than its factorization.

68200840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705032 (or 1705028 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 68200840 is about 8258.3799864138. The cubic root of 68200840 is about 408.5669581677.

The spelling of 68200840 in words is "sixty-eight million, two hundred thousand, eight hundred forty".