1098787 has 2 divisors, whose sum is σ = 1098788. Its totient is φ = 1098786.

The previous prime is 1098737. The next prime is 1098791. The reversal of 1098787 is 7878901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098787 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1098707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549393 + 549394.

It is an arithmetic number, because the mean of its divisors is an integer number (549394).

2^1098787 is an apocalyptic number.

1098787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098787 is an equidigital number, since it uses as much as digits as its factorization.

1098787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1098787 is about 1048.2304136019. The cubic root of 1098787 is about 103.1900534752.

The spelling of 1098787 in words is "one million, ninety-eight thousand, seven hundred eighty-seven".