977693 has 2 divisors, whose sum is σ = 977694. Its totient is φ = 977692.

The previous prime is 977681. The next prime is 977719. The reversal of 977693 is 396779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683929 + 293764 = 827^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 977693 - 2⁶ = 977629 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488846 + 488847.

It is an arithmetic number, because the mean of its divisors is an integer number (488847).

2⁹⁷⁷⁶⁹³ is an apocalyptic number.

It is an amenable number.

977693 is a deficient number, since it is larger than the sum of its proper divisors (1).

977693 is an equidigital number, since it uses as much as digits as its factorization.

977693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 41.

The square root of 977693 is about 988.7835961422. The cubic root of 977693 is about 99.2508348649.

The spelling of 977693 in words is "nine hundred seventy-seven thousand, six hundred ninety-three".