867697881 has 8 divisors (see below), whose sum is σ = 1158958944. Its totient is φ = 577451040.

The previous prime is 867697849. The next prime is 867697907. The reversal of 867697881 is 188796768.

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

It is not a de Polignac number, because 867697881 - 2⁵ = 867697849 is a prime.

It is a super-2 number, since 2×867697881² = 1505799225383780322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (867697811) 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, 251556 + ... + 254981.

It is an arithmetic number, because the mean of its divisors is an integer number (144869868).

Almost surely, 2^867697881 is an apocalyptic number.

It is an amenable number.

867697881 is a deficient number, since it is larger than the sum of its proper divisors (291261063).

867697881 is a wasteful number, since it uses less digits than its factorization.

867697881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507111.

The product of its digits is 8128512, while the sum is 60.

The square root of 867697881 is about 29456.7119855560. The cubic root of 867697881 is about 953.7974982113.

It can be divided in two parts, 86 and 7697881, that added together give a palindrome (7697967).

The spelling of 867697881 in words is "eight hundred sixty-seven million, six hundred ninety-seven thousand, eight hundred eighty-one".