977723 has 2 divisors, whose sum is σ = 977724. Its totient is φ = 977722.

The previous prime is 977719. The next prime is 977747. The reversal of 977723 is 327779.

It is a weak prime.

It is an emirp because it is prime and its reverse (327779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977723 - 2² = 977719 is a prime.

It is a d-powerful number, because it can be written as 9 + 7⁵ + 7⁶ + 7⁷ + 2⁵ + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (977023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488861 + 488862.

It is an arithmetic number, because the mean of its divisors is an integer number (488862).

2⁹⁷⁷⁷²³ is an apocalyptic number.

977723 is a deficient number, since it is larger than the sum of its proper divisors (1).

977723 is an equidigital number, since it uses as much as digits as its factorization.

977723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 35.

The square root of 977723 is about 988.7987661805. The cubic root of 977723 is about 99.2518500079.

The spelling of 977723 in words is "nine hundred seventy-seven thousand, seven hundred twenty-three".