8277789061 has 2 divisors, whose sum is σ = 8277789062. Its totient is φ = 8277789060.

The previous prime is 8277789001. The next prime is 8277789077. The reversal of 8277789061 is 1609877728.

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., 7968240225 + 309548836 = 89265^2 + 17594^2 .

It is a cyclic number.

It is not a de Polignac number, because 8277789061 - 2⁷ = 8277788933 is a prime.

It is a super-2 number, since 2×8277789061² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8277788993 and 8277789011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8277789001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4138894530 + 4138894531.

It is an arithmetic number, because the mean of its divisors is an integer number (4138894531).

Almost surely, 2^8277789061 is an apocalyptic number.

It is an amenable number.

8277789061 is a deficient number, since it is larger than the sum of its proper divisors (1).

8277789061 is an equidigital number, since it uses as much as digits as its factorization.

8277789061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The square root of 8277789061 is about 90982.3557674783. The cubic root of 8277789061 is about 2022.8862003915.

The spelling of 8277789061 in words is "eight billion, two hundred seventy-seven million, seven hundred eighty-nine thousand, sixty-one".