866980451 has 2 divisors, whose sum is σ = 866980452. Its totient is φ = 866980450.

The previous prime is 866980427. The next prime is 866980459. The reversal of 866980451 is 154089668.

866980451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866980451 - 2¹⁰ = 866979427 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 866980396 and 866980405.

It is not a weakly prime, because it can be changed into another prime (866980459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433490225 + 433490226.

It is an arithmetic number, because the mean of its divisors is an integer number (433490226).

Almost surely, 2^866980451 is an apocalyptic number.

866980451 is a deficient number, since it is larger than the sum of its proper divisors (1).

866980451 is an equidigital number, since it uses as much as digits as its factorization.

866980451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 866980451 is about 29444.5317673758. The cubic root of 866980451 is about 953.5345527654.

The spelling of 866980451 in words is "eight hundred sixty-six million, nine hundred eighty thousand, four hundred fifty-one".