3613857 has 16 divisors (see below), whose sum is σ = 5463360. Its totient is φ = 2106432.

The previous prime is 3613847. The next prime is 3613867. The reversal of 3613857 is 7583163.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3613847) and next prime (3613867).

It is not a de Polignac number, because 3613857 - 2⁸ = 3613601 is a prime.

3613857 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (341460).

Almost surely, 2^3613857 is an apocalyptic number.

It is an amenable number.

3613857 is a deficient number, since it is larger than the sum of its proper divisors (1849503).

3613857 is a wasteful number, since it uses less digits than its factorization.

3613857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912.

The product of its digits is 15120, while the sum is 33.

The square root of 3613857 is about 1901.0147290329. The cubic root of 3613857 is about 153.4582782272.

The spelling of 3613857 in words is "three million, six hundred thirteen thousand, eight hundred fifty-seven".