677249 has 4 divisors (see below), whose sum is σ = 679380. Its totient is φ = 675120.

The previous prime is 677239. The next prime is 677309. The reversal of 677249 is 942776.

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 48400 + 628849 = 220^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 677249 - 2⁴ = 677233 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 7⁵ + 2 + 7⁵ + 4⁸ + 9⁶ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (677239) 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, 482 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (169845).

2⁶⁷⁷²⁴⁹ is an apocalyptic number.

It is an amenable number.

677249 is a deficient number, since it is larger than the sum of its proper divisors (2131).

677249 is a wasteful number, since it uses less digits than its factorization.

677249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

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

The square root of 677249 is about 822.9513958916. The cubic root of 677249 is about 87.8178480847.

The spelling of 677249 in words is "six hundred seventy-seven thousand, two hundred forty-nine".