102704621 has 2 divisors, whose sum is σ = 102704622. Its totient is φ = 102704620.

The previous prime is 102704611. The next prime is 102704647. The reversal of 102704621 is 126407201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69122596 + 33582025 = 8314^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 102704621 - 2¹⁴ = 102688237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102704611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51352310 + 51352311.

It is an arithmetic number, because the mean of its divisors is an integer number (51352311).

Almost surely, 2^102704621 is an apocalyptic number.

It is an amenable number.

102704621 is a deficient number, since it is larger than the sum of its proper divisors (1).

102704621 is an equidigital number, since it uses as much as digits as its factorization.

102704621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 102704621 is about 10134.3288381619. The cubic root of 102704621 is about 468.3062940645.

The spelling of 102704621 in words is "one hundred two million, seven hundred four thousand, six hundred twenty-one".