96664621 has 2 divisors, whose sum is σ = 96664622. Its totient is φ = 96664620.

The previous prime is 96664619. The next prime is 96664661. The reversal of 96664621 is 12646669.

It is an a-pointer prime, because the next prime (96664661) can be obtained adding 96664621 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96628900 + 35721 = 9830^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 96664621 - 2¹ = 96664619 is a prime.

Together with 96664619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96664661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48332310 + 48332311.

It is an arithmetic number, because the mean of its divisors is an integer number (48332311).

Almost surely, 2^96664621 is an apocalyptic number.

It is an amenable number.

96664621 is a deficient number, since it is larger than the sum of its proper divisors (1).

96664621 is an equidigital number, since it uses as much as digits as its factorization.

96664621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 96664621 is about 9831.8167700583. The cubic root of 96664621 is about 458.9399361000.

The spelling of 96664621 in words is "ninety-six million, six hundred sixty-four thousand, six hundred twenty-one".