84608621 has 2 divisors, whose sum is σ = 84608622. Its totient is φ = 84608620.

The previous prime is 84608611. The next prime is 84608627. The reversal of 84608621 is 12680648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67010596 + 17598025 = 8186^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 84608621 - 2¹⁰ = 84607597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84608627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42304310 + 42304311.

It is an arithmetic number, because the mean of its divisors is an integer number (42304311).

Almost surely, 2^84608621 is an apocalyptic number.

It is an amenable number.

84608621 is a deficient number, since it is larger than the sum of its proper divisors (1).

84608621 is an equidigital number, since it uses as much as digits as its factorization.

84608621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 84608621 is about 9198.2944614749. The cubic root of 84608621 is about 439.0070947703.

The spelling of 84608621 in words is "eighty-four million, six hundred eight thousand, six hundred twenty-one".