3642863 has 4 divisors (see below), whose sum is σ = 4163280. Its totient is φ = 3122448.

The previous prime is 3642839. The next prime is 3642883. The reversal of 3642863 is 3682463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3682463 = 503 ⋅7321.

It is a de Polignac number, because none of the positive numbers 2^k-3642863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642823) 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, 260198 + ... + 260211.

It is an arithmetic number, because the mean of its divisors is an integer number (1040820).

Almost surely, 2^3642863 is an apocalyptic number.

3642863 is a deficient number, since it is larger than the sum of its proper divisors (520417).

3642863 is an equidigital number, since it uses as much as digits as its factorization.

3642863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520416.

The product of its digits is 20736, while the sum is 32.

The square root of 3642863 is about 1908.6285652269. The cubic root of 3642863 is about 153.8677534481.

The spelling of 3642863 in words is "three million, six hundred forty-two thousand, eight hundred sixty-three".