1010886661 has 2 divisors, whose sum is σ = 1010886662. Its totient is φ = 1010886660.

The previous prime is 1010886647. The next prime is 1010886671. The reversal of 1010886661 is 1666880101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970322500 + 40564161 = 31150^2 + 6369^2 .

It is an emirp because it is prime and its reverse (1666880101) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1999880101 and 1010889991.

It is a cyclic number.

It is not a de Polignac number, because 1010886661 - 2²⁹ = 474015749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1010886661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010886641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505443330 + 505443331.

It is an arithmetic number, because the mean of its divisors is an integer number (505443331).

Almost surely, 2^1010886661 is an apocalyptic number.

It is an amenable number.

1010886661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010886661 is an equidigital number, since it uses as much as digits as its factorization.

1010886661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1010886661 is about 31794.4438699594. The cubic root of 1010886661 is about 1003.6157972526.

It can be divided in two parts, 10108 and 86661, that added together give a palindrome (96769).

The spelling of 1010886661 in words is "one billion, ten million, eight hundred eighty-six thousand, six hundred sixty-one".