868684145 has 16 divisors (see below), whose sum is σ = 1209122688. Its totient is φ = 586776960.

The previous prime is 868684129. The next prime is 868684177. The reversal of 868684145 is 541486868.

868684145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 868684145 - 2⁴ = 868684129 is a prime.

It is a super-2 number, since 2×868684145² = 1509224287548762050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 868684093 and 868684102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182876 + ... + 187565.

It is an arithmetic number, because the mean of its divisors is an integer number (75570168).

Almost surely, 2^868684145 is an apocalyptic number.

It is an amenable number.

868684145 is a deficient number, since it is larger than the sum of its proper divisors (340438543).

868684145 is a wasteful number, since it uses less digits than its factorization.

868684145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370520.

The product of its digits is 1474560, while the sum is 50.

The square root of 868684145 is about 29473.4481355677. The cubic root of 868684145 is about 954.1587375970.

The spelling of 868684145 in words is "eight hundred sixty-eight million, six hundred eighty-four thousand, one hundred forty-five".