7736728061 has 2 divisors, whose sum is σ = 7736728062. Its totient is φ = 7736728060.

The previous prime is 7736728057. The next prime is 7736728117. The reversal of 7736728061 is 1608276377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3904375225 + 3832352836 = 62485^2 + 61906^2 .

It is a cyclic number.

It is not a de Polignac number, because 7736728061 - 2² = 7736728057 is a prime.

It is a super-2 number, since 2×7736728061² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7736727997 and 7736728015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7736788061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3868364030 + 3868364031.

It is an arithmetic number, because the mean of its divisors is an integer number (3868364031).

Almost surely, 2^7736728061 is an apocalyptic number.

It is an amenable number.

7736728061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7736728061 is an equidigital number, since it uses as much as digits as its factorization.

7736728061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 47.

The square root of 7736728061 is about 87958.6724604231. The cubic root of 7736728061 is about 1977.8155057012.

The spelling of 7736728061 in words is "seven billion, seven hundred thirty-six million, seven hundred twenty-eight thousand, sixty-one".