3868505 has 8 divisors (see below), whose sum is σ = 4655112. Its totient is φ = 3086208.

The previous prime is 3868493. The next prime is 3868517. The reversal of 3868505 is 5058683.

It is an interprime number because it is at equal distance from previous prime (3868493) and next prime (3868517).

It can be written as a sum of positive squares in 4 ways, for example, as 781456 + 3087049 = 884^2 + 1757^2 .

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 3868505 - 2⁶ = 3868441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439 + ... + 3131.

It is an arithmetic number, because the mean of its divisors is an integer number (581889).

Almost surely, 2^3868505 is an apocalyptic number.

It is an amenable number.

3868505 is a deficient number, since it is larger than the sum of its proper divisors (786607).

3868505 is a wasteful number, since it uses less digits than its factorization.

3868505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 3868505 is about 1966.8515449825. The cubic root of 3868505 is about 156.9812275552.

The spelling of 3868505 in words is "three million, eight hundred sixty-eight thousand, five hundred five".