677797 has 4 divisors (see below), whose sum is σ = 680940. Its totient is φ = 674656.

The previous prime is 677791. The next prime is 677813. The reversal of 677797 is 797776.

It is a happy number.

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 370881 + 306916 = 609^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 677797 - 2¹⁹ = 153509 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 (677791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (170235).

2⁶⁷⁷⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

677797 is a deficient number, since it is larger than the sum of its proper divisors (3143).

677797 is a wasteful number, since it uses less digits than its factorization.

677797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142.

The product of its digits is 129654, while the sum is 43.

The square root of 677797 is about 823.2842765412. The cubic root of 677797 is about 87.8415278079.

The spelling of 677797 in words is "six hundred seventy-seven thousand, seven hundred ninety-seven".