2621247673 has 4 divisors (see below), whose sum is σ = 2859542928. Its totient is φ = 2382952420.

The previous prime is 2621247667. The next prime is 2621247689. The reversal of 2621247673 is 3767421262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2621247673 - 2⁵ = 2621247641 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2621247613) 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, 119147611 + ... + 119147632.

It is an arithmetic number, because the mean of its divisors is an integer number (714885732).

Almost surely, 2^2621247673 is an apocalyptic number.

It is an amenable number.

2621247673 is a deficient number, since it is larger than the sum of its proper divisors (238295255).

2621247673 is a wasteful number, since it uses less digits than its factorization.

2621247673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238295254.

The product of its digits is 169344, while the sum is 40.

The square root of 2621247673 is about 51198.1217721900. The cubic root of 2621247673 is about 1378.8044804213.

The spelling of 2621247673 in words is "two billion, six hundred twenty-one million, two hundred forty-seven thousand, six hundred seventy-three".