678154371 has 4 divisors (see below), whose sum is σ = 904205832. Its totient is φ = 452102912.

The previous prime is 678154313. The next prime is 678154387. The reversal of 678154371 is 173451876.

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 678154371 - 2⁶ = 678154307 is a prime.

It is a super-3 number, since 3×678154371³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (678154271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113025726 + ... + 113025731.

It is an arithmetic number, because the mean of its divisors is an integer number (226051458).

Almost surely, 2^678154371 is an apocalyptic number.

678154371 is a deficient number, since it is larger than the sum of its proper divisors (226051461).

678154371 is a wasteful number, since it uses less digits than its factorization.

678154371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226051460.

The product of its digits is 141120, while the sum is 42.

The square root of 678154371 is about 26041.3972551397. The cubic root of 678154371 is about 878.5696335327.

The spelling of 678154371 in words is "six hundred seventy-eight million, one hundred fifty-four thousand, three hundred seventy-one".