3871601 has 2 divisors, whose sum is σ = 3871602. Its totient is φ = 3871600.

The previous prime is 3871583. The next prime is 3871603. The reversal of 3871601 is 1061783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 1263376 = 1615^2 + 1124^2 .

It is an emirp because it is prime and its reverse (1061783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3871601 - 2⁶ = 3871537 is a prime.

Together with 3871603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3871603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935800 + 1935801.

It is an arithmetic number, because the mean of its divisors is an integer number (1935801).

Almost surely, 2^3871601 is an apocalyptic number.

It is an amenable number.

3871601 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871601 is an equidigital number, since it uses as much as digits as its factorization.

3871601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 3871601 is about 1967.6384322329. The cubic root of 3871601 is about 157.0230942267.

The spelling of 3871601 in words is "three million, eight hundred seventy-one thousand, six hundred one".