68620100 has 18 divisors (see below), whose sum is σ = 148905834. Its totient is φ = 27448000.

The previous prime is 68620091. The next prime is 68620121. The reversal of 68620100 is 102686.

It can be written as a sum of positive squares in 3 ways, for example, as 18181696 + 50438404 = 4264^2 + 7102^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 343001 + ... + 343200.

Almost surely, 2^68620100 is an apocalyptic number.

It is an amenable number.

68620100 is an abundant number, since it is smaller than the sum of its proper divisors (80285734).

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

68620100 is a wasteful number, since it uses less digits than its factorization.

68620100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686215 (or 686208 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 68620100 is about 8283.7250075072. The cubic root of 68620100 is about 409.4024609126.

Adding to 68620100 its reverse (102686), we get a palindrome (68722786).

The spelling of 68620100 in words is "sixty-eight million, six hundred twenty thousand, one hundred".