678474 has 12 divisors (see below), whose sum is σ = 1470066. Its totient is φ = 226152.

The previous prime is 678463. The next prime is 678479. The reversal of 678474 is 474876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 27225 = 807^2 + 165^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (678479) by changing a digit.

678474 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18829 + ... + 18864.

2⁶⁷⁸⁴⁷⁴ is an apocalyptic number.

678474 is an abundant number, since it is smaller than the sum of its proper divisors (791592).

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

678474 is a wasteful number, since it uses less digits than its factorization.

678474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37701 (or 37698 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 678474 is about 823.6953320251. The cubic root of 678474 is about 87.8707641553.

The spelling of 678474 in words is "six hundred seventy-eight thousand, four hundred seventy-four".