3620471021 has 4 divisors (see below), whose sum is σ = 3621661500. Its totient is φ = 3619280544.

The previous prime is 3620471017. The next prime is 3620471051. The reversal of 3620471021 is 1201740263.

3620471021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1781262025 + 1839208996 = 42205^2 + 42886^2 .

It is a cyclic number.

It is not a de Polignac number, because 3620471021 - 2² = 3620471017 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 (3620471051) 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, 590666 + ... + 596763.

It is an arithmetic number, because the mean of its divisors is an integer number (905415375).

Almost surely, 2^3620471021 is an apocalyptic number.

It is an amenable number.

3620471021 is a deficient number, since it is larger than the sum of its proper divisors (1190479).

3620471021 is a wasteful number, since it uses less digits than its factorization.

3620471021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190478.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 3620471021 is about 60170.3500156015. The cubic root of 3620471021 is about 1535.5184010178.

The spelling of 3620471021 in words is "three billion, six hundred twenty million, four hundred seventy-one thousand, twenty-one".