68220700 has 18 divisors (see below), whose sum is σ = 148039136. Its totient is φ = 27288240.

The previous prime is 68220667. The next prime is 68220701. The reversal of 68220700 is 702286.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68220701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341004 + ... + 341203.

Almost surely, 2^68220700 is an apocalyptic number.

It is an amenable number.

68220700 is an abundant number, since it is smaller than the sum of its proper divisors (79818436).

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

68220700 is a wasteful number, since it uses less digits than its factorization.

68220700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682221 (or 682214 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 68220700 is about 8259.5823138946. The cubic root of 68220700 is about 408.6066123826.

Adding to 68220700 its reverse (702286), we get a palindrome (68922986).

The spelling of 68220700 in words is "sixty-eight million, two hundred twenty thousand, seven hundred".