678820965027 has 4 divisors (see below), whose sum is σ = 905094620040. Its totient is φ = 452547310016.

The previous prime is 678820965019. The next prime is 678820965037. The reversal of 678820965027 is 720569028876.

678820965027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 678820965027 - 2³ = 678820965019 is a prime.

It is a super-2 number, since 2×678820965027² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678820965037) 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, 113136827502 + ... + 113136827507.

It is an arithmetic number, because the mean of its divisors is an integer number (226273655010).

Almost surely, 2^678820965027 is an apocalyptic number.

678820965027 is a deficient number, since it is larger than the sum of its proper divisors (226273655013).

678820965027 is a wasteful number, since it uses less digits than its factorization.

678820965027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226273655012.

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 678820965027 in words is "six hundred seventy-eight billion, eight hundred twenty million, nine hundred sixty-five thousand, twenty-seven".