7566000061 has 2 divisors, whose sum is σ = 7566000062. Its totient is φ = 7566000060.

The previous prime is 7566000053. The next prime is 7566000181. The reversal of 7566000061 is 1600006657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6647303961 + 918696100 = 81531^2 + 30310^2 .

It is an emirp because it is prime and its reverse (1600006657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7566000061 - 2³ = 7566000053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7565999987 and 7566000032.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7566000011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3783000030 + 3783000031.

It is an arithmetic number, because the mean of its divisors is an integer number (3783000031).

Almost surely, 2^7566000061 is an apocalyptic number.

It is an amenable number.

7566000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7566000061 is an equidigital number, since it uses as much as digits as its factorization.

7566000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 7566000061 is about 86982.7572625747. The cubic root of 7566000061 is about 1963.1588709653.

The spelling of 7566000061 in words is "seven billion, five hundred sixty-six million, sixty-one", and thus it is an aban number.