3863657 has 4 divisors (see below), whose sum is σ = 4415616. Its totient is φ = 3311700.

The previous prime is 3863611. The next prime is 3863677. The reversal of 3863657 is 7563683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7563683 = 53 ⋅142711.

It is not a de Polignac number, because 3863657 - 2¹⁴ = 3847273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3863657.

It is not an unprimeable number, because it can be changed into a prime (3863677) 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 3 ways as a sum of consecutive naturals, for example, 275969 + ... + 275982.

It is an arithmetic number, because the mean of its divisors is an integer number (1103904).

Almost surely, 2^3863657 is an apocalyptic number.

It is an amenable number.

3863657 is a deficient number, since it is larger than the sum of its proper divisors (551959).

3863657 is an equidigital number, since it uses as much as digits as its factorization.

3863657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551958.

The product of its digits is 90720, while the sum is 38.

The square root of 3863657 is about 1965.6187321045. The cubic root of 3863657 is about 156.9156239929.

The spelling of 3863657 in words is "three million, eight hundred sixty-three thousand, six hundred fifty-seven".