8698621 has 2 divisors, whose sum is σ = 8698622. Its totient is φ = 8698620.

The previous prime is 8698603. The next prime is 8698633. The reversal of 8698621 is 1268968.

8698621 = 2085² + 2086².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 4347225 = 2086^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 8698621 - 2⁷ = 8698493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8698681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4349310 + 4349311.

It is an arithmetic number, because the mean of its divisors is an integer number (4349311).

Almost surely, 2^8698621 is an apocalyptic number.

8698621 is the 2086-th centered square number.

It is an amenable number.

8698621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8698621 is an equidigital number, since it uses as much as digits as its factorization.

8698621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 8698621 is about 2949.3424690937. The cubic root of 8698621 is about 205.6601443673.

The spelling of 8698621 in words is "eight million, six hundred ninety-eight thousand, six hundred twenty-one".