868520001 has 16 divisors (see below), whose sum is σ = 1220710400. Its totient is φ = 547758288.

The previous prime is 868519991. The next prime is 868520011. The reversal of 868520001 is 100025868.

It is an interprime number because it is at equal distance from previous prime (868519991) and next prime (868520011).

It is not a de Polignac number, because 868520001 - 2⁵ = 868519969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (868520011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30960 + ... + 51918.

It is an arithmetic number, because the mean of its divisors is an integer number (76294400).

Almost surely, 2^868520001 is an apocalyptic number.

It is an amenable number.

868520001 is a deficient number, since it is larger than the sum of its proper divisors (352190399).

868520001 is a wasteful number, since it uses less digits than its factorization.

868520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21708.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 868520001 is about 29470.6633959943. The cubic root of 868520001 is about 954.0986354687.

Adding to 868520001 its reverse (100025868), we get a palindrome (968545869).

The spelling of 868520001 in words is "eight hundred sixty-eight million, five hundred twenty thousand, one".