3620465021 has 4 divisors (see below), whose sum is σ = 3621203292. Its totient is φ = 3619726752.

The previous prime is 3620465011. The next prime is 3620465111. The reversal of 3620465021 is 1205640263.

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 713637796 + 2906827225 = 26714^2 + 53915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3620465021 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 (3620465011) 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, 361730 + ... + 371603.

It is an arithmetic number, because the mean of its divisors is an integer number (905300823).

Almost surely, 2^3620465021 is an apocalyptic number.

It is an amenable number.

3620465021 is a deficient number, since it is larger than the sum of its proper divisors (738271).

3620465021 is an equidigital number, since it uses as much as digits as its factorization.

3620465021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738270.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3620465021 is about 60170.3001571373. The cubic root of 3620465021 is about 1535.5175527750.

The spelling of 3620465021 in words is "three billion, six hundred twenty million, four hundred sixty-five thousand, twenty-one".