1006780111 has 2 divisors, whose sum is σ = 1006780112. Its totient is φ = 1006780110.

The previous prime is 1006780067. The next prime is 1006780121. The reversal of 1006780111 is 1110876001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1006780111 - 2²³ = 998391503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006780121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503390055 + 503390056.

It is an arithmetic number, because the mean of its divisors is an integer number (503390056).

Almost surely, 2^1006780111 is an apocalyptic number.

1006780111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006780111 is an equidigital number, since it uses as much as digits as its factorization.

1006780111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1006780111 is about 31729.7984708381. The cubic root of 1006780111 is about 1002.2549483858.

The spelling of 1006780111 in words is "one billion, six million, seven hundred eighty thousand, one hundred eleven".