677773 has 4 divisors (see below), whose sum is σ = 717660. Its totient is φ = 637888.

The previous prime is 677767. The next prime is 677779. The reversal of 677773 is 377776.

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

It is an interprime number because it is at equal distance from previous prime (677767) and next prime (677779).

It can be written as a sum of positive squares in 2 ways, for example, as 459684 + 218089 = 678^2 + 467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677773 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677779) 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, 19918 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (179415).

2⁶⁷⁷⁷⁷³ is an apocalyptic number.

It is an amenable number.

677773 is a deficient number, since it is larger than the sum of its proper divisors (39887).

677773 is a wasteful number, since it uses less digits than its factorization.

677773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39886.

The product of its digits is 43218, while the sum is 37.

The square root of 677773 is about 823.2697006449. The cubic root of 677773 is about 87.8404910070.

The spelling of 677773 in words is "six hundred seventy-seven thousand, seven hundred seventy-three".