104218637 has 2 divisors, whose sum is σ = 104218638. Its totient is φ = 104218636.

The previous prime is 104218607. The next prime is 104218691. The reversal of 104218637 is 736812401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 33339076 = 8419^2 + 5774^2 .

It is a cyclic number.

It is not a de Polignac number, because 104218637 - 2¹⁸ = 103956493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104218607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52109318 + 52109319.

It is an arithmetic number, because the mean of its divisors is an integer number (52109319).

Almost surely, 2^104218637 is an apocalyptic number.

It is an amenable number.

104218637 is a deficient number, since it is larger than the sum of its proper divisors (1).

104218637 is an equidigital number, since it uses as much as digits as its factorization.

104218637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 104218637 is about 10208.7529600828. The cubic root of 104218637 is about 470.5962509606.

The spelling of 104218637 in words is "one hundred four million, two hundred eighteen thousand, six hundred thirty-seven".