65878868 has 24 divisors (see below), whose sum is σ = 127189440. Its totient is φ = 29606720.

The previous prime is 65878867. The next prime is 65878873. The reversal of 65878868 is 86887856.

It is a super-2 number, since 2×65878868² = 8680050497922848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65878861) 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, 4496 + ... + 12327.

It is an arithmetic number, because the mean of its divisors is an integer number (5299560).

Almost surely, 2^65878868 is an apocalyptic number.

It is an amenable number.

65878868 is a deficient number, since it is larger than the sum of its proper divisors (61310572).

65878868 is a wasteful number, since it uses less digits than its factorization.

65878868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16927 (or 16925 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 56.

The square root of 65878868 is about 8116.5798215751. The cubic root of 65878868 is about 403.8766165716.

It can be divided in two parts, 658788 and 68, that added together give a palindrome (658856).

The spelling of 65878868 in words is "sixty-five million, eight hundred seventy-eight thousand, eight hundred sixty-eight".