678151 has 4 divisors (see below), whose sum is σ = 680400. Its totient is φ = 675904.

The previous prime is 678133. The next prime is 678157. The reversal of 678151 is 151876.

It is a happy number.

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 678151 - 2⁷ = 678023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678157) 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, 586 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2⁶⁷⁸¹⁵¹ is an apocalyptic number.

678151 is a deficient number, since it is larger than the sum of its proper divisors (2249).

678151 is a wasteful number, since it uses less digits than its factorization.

678151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248.

The product of its digits is 1680, while the sum is 28.

The square root of 678151 is about 823.4992410440. The cubic root of 678151 is about 87.8568177786.

It can be divided in two parts, 678 and 151, that multiplied together give a triangular number (102378 = T₄₅₂).

The spelling of 678151 in words is "six hundred seventy-eight thousand, one hundred fifty-one".