8707521377 has 2 divisors, whose sum is σ = 8707521378. Its totient is φ = 8707521376.

The previous prime is 8707521359. The next prime is 8707521413. The reversal of 8707521377 is 7731257078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7982350336 + 725171041 = 89344^2 + 26929^2 .

It is a cyclic number.

It is not a de Polignac number, because 8707521377 - 2¹² = 8707517281 is a prime.

It is a super-2 number, since 2×8707521377² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8707527377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4353760688 + 4353760689.

It is an arithmetic number, because the mean of its divisors is an integer number (4353760689).

Almost surely, 2^8707521377 is an apocalyptic number.

It is an amenable number.

8707521377 is a deficient number, since it is larger than the sum of its proper divisors (1).

8707521377 is an equidigital number, since it uses as much as digits as its factorization.

8707521377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576240, while the sum is 47.

The square root of 8707521377 is about 93314.1006332912. The cubic root of 8707521377 is about 2057.3026386747.

The spelling of 8707521377 in words is "eight billion, seven hundred seven million, five hundred twenty-one thousand, three hundred seventy-seven".