978011 has 2 divisors, whose sum is σ = 978012. Its totient is φ = 978010.

The previous prime is 978007. The next prime is 978017. The reversal of 978011 is 110879.

It is a weak prime.

It is an emirp because it is prime and its reverse (110879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978011 - 2² = 978007 is a prime.

It is a super-2 number, since 2×978011² = 1913011032242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (978017) 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, 489005 + 489006.

It is an arithmetic number, because the mean of its divisors is an integer number (489006).

2⁹⁷⁸⁰¹¹ is an apocalyptic number.

978011 is a deficient number, since it is larger than the sum of its proper divisors (1).

978011 is an equidigital number, since it uses as much as digits as its factorization.

978011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 978011 is about 988.9443867074. The cubic root of 978011 is about 99.2615943243.

The spelling of 978011 in words is "nine hundred seventy-eight thousand, eleven".