6244465021 has 4 divisors (see below), whose sum is σ = 6247934044. Its totient is φ = 6240996000.

The previous prime is 6244465009. The next prime is 6244465061. The reversal of 6244465021 is 1205644426.

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 357739396 + 5886725625 = 18914^2 + 76725^2 .

It is a cyclic number.

It is not a de Polignac number, because 6244465021 - 2¹⁵ = 6244432253 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 (6244465061) 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, 1731810 + ... + 1735411.

It is an arithmetic number, because the mean of its divisors is an integer number (1561983511).

Almost surely, 2^6244465021 is an apocalyptic number.

It is an amenable number.

6244465021 is a deficient number, since it is larger than the sum of its proper divisors (3469023).

6244465021 is a wasteful number, since it uses less digits than its factorization.

6244465021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469022.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 6244465021 is about 79021.9274695322. The cubic root of 6244465021 is about 1841.4718277374.

The spelling of 6244465021 in words is "six billion, two hundred forty-four million, four hundred sixty-five thousand, twenty-one".