975977 has 2 divisors, whose sum is σ = 975978. Its totient is φ = 975976.

The previous prime is 975967. The next prime is 975991. The reversal of 975977 is 779579.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 434281 = 736^2 + 659^2 .

It is an emirp because it is prime and its reverse (779579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 975977 - 2¹⁸ = 713833 is a prime.

It is a super-2 number, since 2×975977² = 1905062209058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975907) 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 as a sum of consecutive naturals, namely, 487988 + 487989.

It is an arithmetic number, because the mean of its divisors is an integer number (487989).

2⁹⁷⁵⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

975977 is a deficient number, since it is larger than the sum of its proper divisors (1).

975977 is an equidigital number, since it uses as much as digits as its factorization.

975977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138915, while the sum is 44.

The square root of 975977 is about 987.9154822150. The cubic root of 975977 is about 99.1927340867.

The spelling of 975977 in words is "nine hundred seventy-five thousand, nine hundred seventy-seven".