3688247 has 2 divisors, whose sum is σ = 3688248. Its totient is φ = 3688246.

The previous prime is 3688241. The next prime is 3688277. The reversal of 3688247 is 7428863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3688247 - 2¹² = 3684151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3688247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3688241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844123 + 1844124.

It is an arithmetic number, because the mean of its divisors is an integer number (1844124).

Almost surely, 2^3688247 is an apocalyptic number.

3688247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688247 is an equidigital number, since it uses as much as digits as its factorization.

3688247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 3688247 is about 1920.4809293508. The cubic root of 3688247 is about 154.5040966925.

The spelling of 3688247 in words is "three million, six hundred eighty-eight thousand, two hundred forty-seven".