82650961 has 2 divisors, whose sum is σ = 82650962. Its totient is φ = 82650960.

The previous prime is 82650959. The next prime is 82650977. The reversal of 82650961 is 16905628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59907600 + 22743361 = 7740^2 + 4769^2 .

It is a cyclic number.

It is not a de Polignac number, because 82650961 - 2¹ = 82650959 is a prime.

Together with 82650959, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82650961.

It is not a weakly prime, because it can be changed into another prime (82650901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41325480 + 41325481.

It is an arithmetic number, because the mean of its divisors is an integer number (41325481).

Almost surely, 2^82650961 is an apocalyptic number.

It is an amenable number.

82650961 is a deficient number, since it is larger than the sum of its proper divisors (1).

82650961 is an equidigital number, since it uses as much as digits as its factorization.

82650961 is an evil number, because the sum of its binary digits is even.

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

The square root of 82650961 is about 9091.2573937822. The cubic root of 82650961 is about 435.5947490670.

The spelling of 82650961 in words is "eighty-two million, six hundred fifty thousand, nine hundred sixty-one".