677429 has 4 divisors (see below), whose sum is σ = 679884. Its totient is φ = 674976.

The previous prime is 677423. The next prime is 677441. The reversal of 677429 is 924776.

677429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34225 + 643204 = 185^2 + 802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677429 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 (677423) 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, 752 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (169971).

2⁶⁷⁷⁴²⁹ is an apocalyptic number.

It is an amenable number.

677429 is a deficient number, since it is larger than the sum of its proper divisors (2455).

677429 is a wasteful number, since it uses less digits than its factorization.

677429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454.

The product of its digits is 21168, while the sum is 35.

The square root of 677429 is about 823.0607510992. The cubic root of 677429 is about 87.8256275043.

The spelling of 677429 in words is "six hundred seventy-seven thousand, four hundred twenty-nine".