100785307 has 6 divisors (see below), whose sum is σ = 117240108. Its totient is φ = 86387364.

The previous prime is 100785271. The next prime is 100785319. The reversal of 100785307 is 703587001.

It is a de Polignac number, because none of the positive numbers 2^k-100785307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100785007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1028373 + ... + 1028470.

It is an arithmetic number, because the mean of its divisors is an integer number (19540018).

Almost surely, 2^100785307 is an apocalyptic number.

100785307 is a deficient number, since it is larger than the sum of its proper divisors (16454801).

100785307 is an equidigital number, since it uses as much as digits as its factorization.

100785307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056857 (or 2056850 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 100785307 is about 10039.1885628272. The cubic root of 100785307 is about 465.3707406763.

The spelling of 100785307 in words is "one hundred million, seven hundred eighty-five thousand, three hundred seven".