7244147621 has 4 divisors (see below), whose sum is σ = 7331426592. Its totient is φ = 7156868652.

The previous prime is 7244147563. The next prime is 7244147639. The reversal of 7244147621 is 1267414427.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1267414427 = 41 ⋅30912547.

It is a cyclic number.

It is not a de Polignac number, because 7244147621 - 2⁶ = 7244147557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7244147021) 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, 43639361 + ... + 43639526.

It is an arithmetic number, because the mean of its divisors is an integer number (1832856648).

Almost surely, 2^7244147621 is an apocalyptic number.

It is an amenable number.

7244147621 is a deficient number, since it is larger than the sum of its proper divisors (87278971).

7244147621 is an equidigital number, since it uses as much as digits as its factorization.

7244147621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87278970.

The product of its digits is 75264, while the sum is 38.

The square root of 7244147621 is about 85112.5585386787. The cubic root of 7244147621 is about 1934.9174022570.

The spelling of 7244147621 in words is "seven billion, two hundred forty-four million, one hundred forty-seven thousand, six hundred twenty-one".