868307581 has 8 divisors (see below), whose sum is σ = 915642720. Its totient is φ = 821135952.

The previous prime is 868307567. The next prime is 868307591. The reversal of 868307581 is 185703868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868307581 - 2⁵ = 868307549 is a prime.

It is a super-2 number, since 2×868307581² = 1507916110444143122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868307591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29890 + ... + 51283.

It is an arithmetic number, because the mean of its divisors is an integer number (114455340).

Almost surely, 2^868307581 is an apocalyptic number.

It is an amenable number.

868307581 is a deficient number, since it is larger than the sum of its proper divisors (47335139).

868307581 is a wasteful number, since it uses less digits than its factorization.

868307581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81755.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 868307581 is about 29467.0592526638. The cubic root of 868307581 is about 954.0208456052.

The spelling of 868307581 in words is "eight hundred sixty-eight million, three hundred seven thousand, five hundred eighty-one".