3630857 has 2 divisors, whose sum is σ = 3630858. Its totient is φ = 3630856.

The previous prime is 3630841. The next prime is 3630859. The reversal of 3630857 is 7580363.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3200521 + 430336 = 1789^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630857 - 2⁴ = 3630841 is a prime.

Together with 3630859, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3630859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815428 + 1815429.

It is an arithmetic number, because the mean of its divisors is an integer number (1815429).

Almost surely, 2^3630857 is an apocalyptic number.

It is an amenable number.

3630857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630857 is an equidigital number, since it uses as much as digits as its factorization.

3630857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3630857 is about 1905.4807792261. The cubic root of 3630857 is about 153.6985303736.

The spelling of 3630857 in words is "three million, six hundred thirty thousand, eight hundred fifty-seven".