3622403021 has 4 divisors (see below), whose sum is σ = 3747313500. Its totient is φ = 3497492544.

The previous prime is 3622402997. The next prime is 3622403047. The reversal of 3622403021 is 1203042263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203042263 = 73 ⋅16480031.

It can be written as a sum of positive squares in 2 ways, for example, as 1690360996 + 1932042025 = 41114^2 + 43955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3622403021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622463021) 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, 62455196 + ... + 62455253.

It is an arithmetic number, because the mean of its divisors is an integer number (936828375).

Almost surely, 2^3622403021 is an apocalyptic number.

It is an amenable number.

3622403021 is a deficient number, since it is larger than the sum of its proper divisors (124910479).

3622403021 is a wasteful number, since it uses less digits than its factorization.

3622403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124910478.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3622403021 is about 60186.4022932091. The cubic root of 3622403021 is about 1535.7914864806.

Adding to 3622403021 its reverse (1203042263), we get a palindrome (4825445284).

The spelling of 3622403021 in words is "three billion, six hundred twenty-two million, four hundred three thousand, twenty-one".