7776061 has 2 divisors, whose sum is σ = 7776062.
Its totient is φ = 7776060.
The previous prime is 7776059. The next prime is 7776079. The reversal of 7776061 is 1606777.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 6579225 + 1196836 = 2565^2 + 1094^2
It is an emirp because it is prime and its reverse (1606777) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 7776061 - 21 = 7776059 is a prime.
Together with 7776059, it forms a pair of twin primes.
7776061 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7771061) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888030 + 3888031.
It is an arithmetic number, because the mean of its divisors is an integer number (3888031).
Almost surely, 27776061 is an apocalyptic number.
It is an amenable number.
7776061 is a deficient number, since it is larger than the sum of its proper divisors (1).
7776061 is an equidigital number, since it uses as much as digits as its factorization.
7776061 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 12348, while the sum is 34.
The square root of 7776061 is about 2788.5589468397.
The cubic root of 7776061 is about 198.1161529816.
The spelling of 7776061 in words is "seven million, seven hundred seventy-six thousand, sixty-one".