682079987 has 2 divisors, whose sum is σ = 682079988. Its totient is φ = 682079986.

The previous prime is 682079969. The next prime is 682080017. The reversal of 682079987 is 789970286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 682079987 - 2²⁰ = 681031411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (682072987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341039993 + 341039994.

It is an arithmetic number, because the mean of its divisors is an integer number (341039994).

Almost surely, 2^682079987 is an apocalyptic number.

682079987 is a deficient number, since it is larger than the sum of its proper divisors (1).

682079987 is an equidigital number, since it uses as much as digits as its factorization.

682079987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 682079987 is about 26116.6610997654. The cubic root of 682079987 is about 880.2616246044.

The spelling of 682079987 in words is "six hundred eighty-two million, seventy-nine thousand, nine hundred eighty-seven".