10642777 has 2 divisors, whose sum is σ = 10642778. Its totient is φ = 10642776.

The previous prime is 10642763. The next prime is 10642789. The reversal of 10642777 is 77724601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 2005056 = 2939^2 + 1416^2 .

It is an emirp because it is prime and its reverse (77724601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10642777 - 2⁷ = 10642649 is a prime.

It is a super-2 number, since 2×10642777² = 226537404543458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10642747) 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, 5321388 + 5321389.

It is an arithmetic number, because the mean of its divisors is an integer number (5321389).

Almost surely, 2^10642777 is an apocalyptic number.

It is an amenable number.

10642777 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642777 is an equidigital number, since it uses as much as digits as its factorization.

10642777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 10642777 is about 3262.3269302754. The cubic root of 10642777 is about 219.9640230426.

The spelling of 10642777 in words is "ten million, six hundred forty-two thousand, seven hundred seventy-seven".