100640306 has 16 divisors (see below), whose sum is σ = 172136664. Its totient is φ = 43716864.

The previous prime is 100640303. The next prime is 100640329. The reversal of 100640306 is 603046001.

It can be written as a sum of positive squares in 4 ways, for example, as 94264681 + 6375625 = 9709^2 + 2525^2 .

It is not an unprimeable number, because it can be changed into a prime (100640303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113405 + ... + 114288.

Almost surely, 2^100640306 is an apocalyptic number.

100640306 is a deficient number, since it is larger than the sum of its proper divisors (71496358).

100640306 is a wasteful number, since it uses less digits than its factorization.

100640306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227725.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 100640306 is about 10031.9642144497. The cubic root of 100640306 is about 465.1474554517.

Adding to 100640306 its reverse (603046001), we get a palindrome (703686307).

The spelling of 100640306 in words is "one hundred million, six hundred forty thousand, three hundred six".