3816217 has 4 divisors (see below), whose sum is σ = 3919396. Its totient is φ = 3713040.

The previous prime is 3816203. The next prime is 3816233. The reversal of 3816217 is 7126183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3671056 + 145161 = 1916^2 + 381^2 .

It is a cyclic number.

It is not a de Polignac number, because 3816217 - 2⁷ = 3816089 is a prime.

It is a Duffinian number.

3816217 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3816277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51534 + ... + 51607.

It is an arithmetic number, because the mean of its divisors is an integer number (979849).

Almost surely, 2^3816217 is an apocalyptic number.

3816217 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3816217 is a deficient number, since it is larger than the sum of its proper divisors (103179).

3816217 is a wasteful number, since it uses less digits than its factorization.

3816217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103178.

The product of its digits is 2016, while the sum is 28.

The square root of 3816217 is about 1953.5140132592. The cubic root of 3816217 is about 156.2707466852.

The spelling of 3816217 in words is "three million, eight hundred sixteen thousand, two hundred seventeen".