695081987 has 2 divisors, whose sum is σ = 695081988. Its totient is φ = 695081986.

The previous prime is 695081957. The next prime is 695081999. The reversal of 695081987 is 789180596.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 695081987 - 2¹² = 695077891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (695081957) 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, 347540993 + 347540994.

It is an arithmetic number, because the mean of its divisors is an integer number (347540994).

Almost surely, 2^695081987 is an apocalyptic number.

695081987 is a deficient number, since it is larger than the sum of its proper divisors (1).

695081987 is an equidigital number, since it uses as much as digits as its factorization.

695081987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 695081987 is about 26364.4075791587. The cubic root of 695081987 is about 885.8197207881.

The spelling of 695081987 in words is "six hundred ninety-five million, eighty-one thousand, nine hundred eighty-seven".