677723 has 4 divisors (see below), whose sum is σ = 693528. Its totient is φ = 661920.

The previous prime is 677717. The next prime is 677737. The reversal of 677723 is 327776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677723.

It is not an unprimeable number, because it can be changed into a prime (677783) 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, 7838 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (173382).

2⁶⁷⁷⁷²³ is an apocalyptic number.

677723 is a deficient number, since it is larger than the sum of its proper divisors (15805).

677723 is a wasteful number, since it uses less digits than its factorization.

677723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15804.

The product of its digits is 12348, while the sum is 32.

The square root of 677723 is about 823.2393333655. The cubic root of 677723 is about 87.8383309266.

The spelling of 677723 in words is "six hundred seventy-seven thousand, seven hundred twenty-three".