8650815601 has 2 divisors, whose sum is σ = 8650815602. Its totient is φ = 8650815600.

The previous prime is 8650815581. The next prime is 8650815671. The reversal of 8650815601 is 1065180568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7610817600 + 1039998001 = 87240^2 + 32249^2 .

It is a cyclic number.

It is not a de Polignac number, because 8650815601 - 2⁷ = 8650815473 is a prime.

It is a super-2 number, since 2×8650815601² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8650815671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4325407800 + 4325407801.

It is an arithmetic number, because the mean of its divisors is an integer number (4325407801).

Almost surely, 2^8650815601 is an apocalyptic number.

It is an amenable number.

8650815601 is a deficient number, since it is larger than the sum of its proper divisors (1).

8650815601 is an equidigital number, since it uses as much as digits as its factorization.

8650815601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 8650815601 is about 93009.7607834791. The cubic root of 8650815601 is about 2052.8270020205.

The spelling of 8650815601 in words is "eight billion, six hundred fifty million, eight hundred fifteen thousand, six hundred one".