678237855 has 8 divisors (see below), whose sum is σ = 1085180592. Its totient is φ = 361726848.

The previous prime is 678237853. The next prime is 678237883. The reversal of 678237855 is 558732876.

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

It is not a de Polignac number, because 678237855 - 2¹ = 678237853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678237798 and 678237807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678237853) 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, 22607914 + ... + 22607943.

It is an arithmetic number, because the mean of its divisors is an integer number (135647574).

Almost surely, 2^678237855 is an apocalyptic number.

678237855 is a deficient number, since it is larger than the sum of its proper divisors (406942737).

678237855 is a wasteful number, since it uses less digits than its factorization.

678237855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45215865.

The product of its digits is 2822400, while the sum is 51.

The square root of 678237855 is about 26043.0001151941. Note that the first 3 decimals coincide. The cubic root of 678237855 is about 878.6056840746.

The spelling of 678237855 in words is "six hundred seventy-eight million, two hundred thirty-seven thousand, eight hundred fifty-five".