8625961 has 2 divisors, whose sum is σ = 8625962. Its totient is φ = 8625960.

The previous prime is 8625959. The next prime is 8625973. The reversal of 8625961 is 1695268.

8625961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 469225 = 2856^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 8625961 - 2¹ = 8625959 is a prime.

Together with 8625959, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8625961.

It is not a weakly prime, because it can be changed into another prime (8625901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4312980 + 4312981.

It is an arithmetic number, because the mean of its divisors is an integer number (4312981).

Almost surely, 2^8625961 is an apocalyptic number.

It is an amenable number.

8625961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8625961 is an equidigital number, since it uses as much as digits as its factorization.

8625961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 8625961 is about 2936.9986380657. The cubic root of 8625961 is about 205.0859128300.

It can be divided in two parts, 86259 and 61, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 8625961 in words is "eight million, six hundred twenty-five thousand, nine hundred sixty-one".