100985745 has 16 divisors (see below), whose sum is σ = 184659840. Its totient is φ = 46164864.

The previous prime is 100985713. The next prime is 100985749. The reversal of 100985745 is 547589001.

It is not a de Polignac number, because 100985745 - 2⁵ = 100985713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100985749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480780 + ... + 480989.

It is an arithmetic number, because the mean of its divisors is an integer number (11541240).

Almost surely, 2^100985745 is an apocalyptic number.

100985745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100985745 is a deficient number, since it is larger than the sum of its proper divisors (83674095).

100985745 is an equidigital number, since it uses as much as digits as its factorization.

100985745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961784.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 100985745 is about 10049.1663833375. The cubic root of 100985745 is about 465.6790402873.

The spelling of 100985745 in words is "one hundred million, nine hundred eighty-five thousand, seven hundred forty-five".