133680977 has 2 divisors, whose sum is σ = 133680978. Its totient is φ = 133680976.

The previous prime is 133680971. The next prime is 133680997. The reversal of 133680977 is 779086331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 4426816 = 11369^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 133680977 - 2⁶ = 133680913 is a prime.

It is a super-2 number, since 2×133680977² = 35741207223349058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133680971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66840488 + 66840489.

It is an arithmetic number, because the mean of its divisors is an integer number (66840489).

Almost surely, 2^133680977 is an apocalyptic number.

It is an amenable number.

133680977 is a deficient number, since it is larger than the sum of its proper divisors (1).

133680977 is an equidigital number, since it uses as much as digits as its factorization.

133680977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 133680977 is about 11562.0489966096. The cubic root of 133680977 is about 511.3165739669.

The spelling of 133680977 in words is "one hundred thirty-three million, six hundred eighty thousand, nine hundred seventy-seven".