3866625 has 48 divisors (see below), whose sum is σ = 7982208. Its totient is φ = 1764000.

The previous prime is 3866623. The next prime is 3866627. The reversal of 3866625 is 5266683.

It is an interprime number because it is at equal distance from previous prime (3866623) and next prime (3866627).

It is not a de Polignac number, because 3866625 - 2¹ = 3866623 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3866625.

It is not an unprimeable number, because it can be changed into a prime (3866623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7630 + ... + 8120.

It is an arithmetic number, because the mean of its divisors is an integer number (166296).

It is a Proth number, since it is equal to 59 ⋅ 2¹⁶ + 1 and 59 < 2¹⁶.

Almost surely, 2^3866625 is an apocalyptic number.

3866625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3866625 is an abundant number, since it is smaller than the sum of its proper divisors (4115583).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3866625 is a wasteful number, since it uses less digits than its factorization.

3866625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 506 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3866625 is about 1966.3735657296. The cubic root of 3866625 is about 156.9557937396.

The spelling of 3866625 in words is "three million, eight hundred sixty-six thousand, six hundred twenty-five".