100645345 has 16 divisors (see below), whose sum is σ = 122189760. Its totient is φ = 79579584.

The previous prime is 100645343. The next prime is 100645361. The reversal of 100645345 is 543546001.

It is a cyclic number.

It is not a de Polignac number, because 100645345 - 2¹ = 100645343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100645343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265366 + ... + 265744.

It is an arithmetic number, because the mean of its divisors is an integer number (7636860).

Almost surely, 2^100645345 is an apocalyptic number.

It is an amenable number.

100645345 is a deficient number, since it is larger than the sum of its proper divisors (21544415).

100645345 is a wasteful number, since it uses less digits than its factorization.

100645345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 100645345 is about 10032.2153585337. The cubic root of 100645345 is about 465.1552185406.

The spelling of 100645345 in words is "one hundred million, six hundred forty-five thousand, three hundred forty-five".