3632861 has 4 divisors (see below), whose sum is σ = 3666300. Its totient is φ = 3599424.

The previous prime is 3632833. The next prime is 3632879. The reversal of 3632861 is 1682363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2540836 + 1092025 = 1594^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 3632861 - 2¹⁴ = 3616477 is a prime.

It is a pancake number, because a pancake can be divided into 3632861 parts by 2695 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3632821) 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, 16556 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (916575).

Almost surely, 2^3632861 is an apocalyptic number.

It is an amenable number.

3632861 is a deficient number, since it is larger than the sum of its proper divisors (33439).

3632861 is a wasteful number, since it uses less digits than its factorization.

3632861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33438.

The product of its digits is 5184, while the sum is 29.

The square root of 3632861 is about 1906.0065582259. The cubic root of 3632861 is about 153.7268024137.

The spelling of 3632861 in words is "three million, six hundred thirty-two thousand, eight hundred sixty-one".