868554691 has 4 divisors (see below), whose sum is σ = 868805584. Its totient is φ = 868303800.

The previous prime is 868554671. The next prime is 868554697. The reversal of 868554691 is 196455868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868554691 - 2⁷ = 868554563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868554697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120180 + ... + 127201.

It is an arithmetic number, because the mean of its divisors is an integer number (217201396).

Almost surely, 2^868554691 is an apocalyptic number.

868554691 is a deficient number, since it is larger than the sum of its proper divisors (250893).

868554691 is a wasteful number, since it uses less digits than its factorization.

868554691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250892.

The product of its digits is 2073600, while the sum is 52.

The square root of 868554691 is about 29471.2519415107. The cubic root of 868554691 is about 954.1113380129. Note that the first 3 decimals are identical.

The spelling of 868554691 in words is "eight hundred sixty-eight million, five hundred fifty-four thousand, six hundred ninety-one".