3858645 has 16 divisors (see below), whose sum is σ = 7056000. Its totient is φ = 1763904.

The previous prime is 3858629. The next prime is 3858667. The reversal of 3858645 is 5468583.

It is a happy number.

It is not a de Polignac number, because 3858645 - 2⁴ = 3858629 is a prime.

It is a d-powerful number, because it can be written as 3³ + 8² + 5⁴ + 8⁷ + 6⁸ + 4⁸ + 5⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18270 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (441000).

Almost surely, 2^3858645 is an apocalyptic number.

3858645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3858645 is a deficient number, since it is larger than the sum of its proper divisors (3197355).

3858645 is a wasteful number, since it uses less digits than its factorization.

3858645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36764.

The product of its digits is 115200, while the sum is 39.

The square root of 3858645 is about 1964.3434017503. The cubic root of 3858645 is about 156.8477434484.

The spelling of 3858645 in words is "three million, eight hundred fifty-eight thousand, six hundred forty-five".