678876069408 has 24 divisors (see below), whose sum is σ = 1782049682448. Its totient is φ = 226292023104.

The previous prime is 678876069407. The next prime is 678876069409. The reversal of 678876069408 is 804960678876.

It is an interprime number because it is at equal distance from previous prime (678876069407) and next prime (678876069409).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×678876069408² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678876069401) 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, 3535812766 + ... + 3535812957.

It is an arithmetic number, because the mean of its divisors is an integer number (74252070102).

Almost surely, 2^678876069408 is an apocalyptic number.

It is an amenable number.

678876069408 is an abundant number, since it is smaller than the sum of its proper divisors (1103173613040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678876069408 is a wasteful number, since it uses less digits than its factorization.

678876069408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071625736 (or 7071625728 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 69.

The spelling of 678876069408 in words is "six hundred seventy-eight billion, eight hundred seventy-six million, sixty-nine thousand, four hundred eight".