8620410961 has 2 divisors, whose sum is σ = 8620410962. Its totient is φ = 8620410960.

The previous prime is 8620410947. The next prime is 8620410973. The reversal of 8620410961 is 1690140268.

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., 8379571600 + 240839361 = 91540^2 + 15519^2 .

It is a cyclic number.

It is not a de Polignac number, because 8620410961 - 2¹¹ = 8620408913 is a prime.

It is a super-2 number, since 2×8620410961² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8620410961.

It is not a weakly prime, because it can be changed into another prime (8620410061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310205480 + 4310205481.

It is an arithmetic number, because the mean of its divisors is an integer number (4310205481).

Almost surely, 2^8620410961 is an apocalyptic number.

It is an amenable number.

8620410961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8620410961 is an equidigital number, since it uses as much as digits as its factorization.

8620410961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 8620410961 is about 92846.1682623467. The cubic root of 8620410961 is about 2050.4191854270.

The spelling of 8620410961 in words is "eight billion, six hundred twenty million, four hundred ten thousand, nine hundred sixty-one".