677478 has 8 divisors (see below), whose sum is σ = 1354968. Its totient is φ = 225824.

The previous prime is 677473. The next prime is 677531. The reversal of 677478 is 874776.

It is a happy number.

677478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

677478 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677471) 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, 56451 + ... + 56462.

It is an arithmetic number, because the mean of its divisors is an integer number (169371).

2⁶⁷⁷⁴⁷⁸ is an apocalyptic number.

677478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

677478 is a wasteful number, since it uses less digits than its factorization.

677478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112918.

The product of its digits is 65856, while the sum is 39.

The square root of 677478 is about 823.0905175010. The cubic root of 677478 is about 87.8277449965.

The spelling of 677478 in words is "six hundred seventy-seven thousand, four hundred seventy-eight".