868877997 has 8 divisors (see below), whose sum is σ = 1247619744. Its totient is φ = 534694128.

The previous prime is 868877981. The next prime is 868878029. The reversal of 868877997 is 799778868.

868877997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 868877997 - 2⁴ = 868877981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868877917) 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, 11139423 + ... + 11139500.

It is an arithmetic number, because the mean of its divisors is an integer number (155952468).

Almost surely, 2^868877997 is an apocalyptic number.

It is an amenable number.

868877997 is a deficient number, since it is larger than the sum of its proper divisors (378741747).

868877997 is a wasteful number, since it uses less digits than its factorization.

868877997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22278939.

The product of its digits is 85349376, while the sum is 69.

The square root of 868877997 is about 29476.7365391761. The cubic root of 868877997 is about 954.2297077049.

The spelling of 868877997 in words is "eight hundred sixty-eight million, eight hundred seventy-seven thousand, nine hundred ninety-seven".