2864011621 has 4 divisors (see below), whose sum is σ = 2893537612. Its totient is φ = 2834485632.

The previous prime is 2864011597. The next prime is 2864011639. The reversal of 2864011621 is 1261104682.

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 2250458721 + 613552900 = 47439^2 + 24770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2864011621 - 2⁹ = 2864011109 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 (2864011691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14762850 + ... + 14763043.

It is an arithmetic number, because the mean of its divisors is an integer number (723384403).

Almost surely, 2^2864011621 is an apocalyptic number.

It is an amenable number.

2864011621 is a deficient number, since it is larger than the sum of its proper divisors (29525991).

2864011621 is an equidigital number, since it uses as much as digits as its factorization.

2864011621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29525990.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2864011621 is about 53516.4612152186. The cubic root of 2864011621 is about 1420.1196125190.

The spelling of 2864011621 in words is "two billion, eight hundred sixty-four million, eleven thousand, six hundred twenty-one".