3520857 has 8 divisors (see below), whose sum is σ = 4707360. Its totient is φ = 2340800.

The previous prime is 3520841. The next prime is 3520873. The reversal of 3520857 is 7580253.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3520841) and next prime (3520873).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3520857 - 2⁴ = 3520841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3520837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (588420).

Almost surely, 2^3520857 is an apocalyptic number.

It is an amenable number.

3520857 is a deficient number, since it is larger than the sum of its proper divisors (1186503).

3520857 is a wasteful number, since it uses less digits than its factorization.

3520857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 3520857 is about 1876.3946812971. The cubic root of 3520857 is about 152.1304426191.

The spelling of 3520857 in words is "three million, five hundred twenty thousand, eight hundred fifty-seven".